3,100+ results
- Speedo Endurance Youth Green and White Swim Suit One Piece Girls Size 12Opens in a new window or tabPre-Owned$12.00or Best Offer+$5.31 delivery
- Matilda Jane Luau Pink Hibiscus 2pc Swimsuit NWT Size 12Opens in a new window or tabBrand New$22.00or Best Offer+$4.84 delivery
- Cabana Life Girls 12 Rash Guard Long Sleeve Swim Shirt Zip Sun ProtectionOpens in a new window or tabPre-Owned$16.09Was: $22.9930% offor Best Offer+$6.30 deliveryFree returnsExtra 15% off with couponTop Rated Plus
- Athleta NWT high neck girls one piece swimsuit sz 12 large wave break blueOpens in a new window or tabBrand New$40.00or Best Offer+$12.00 delivery
- Lily & Londyn’s Swimsuit Tankini Bikini Floral Print EUC Size 12Opens in a new window or tabPre-Owned$29.08or Best Offer+$5.25 deliveryFree returnsTop Rated Plus
- Lilly Pulitzer Girls Purple Pink Two-Piece Bikini Swimsuit Adj Strap Size 12Opens in a new window or tabPre-Owned$19.00or Best Offer+$6.10 delivery
- Girls Matilda Jane MJC Starboard Swimsuit Bottom (Sz 10) & Tankini Top (Sz 12)Opens in a new window or tabPre-Owned$34.99or Best Offer+$4.71 delivery
- Abercrombie & Fitch Girls Bikini Swim Bottoms - Size 11/12 - PurpleOpens in a new window or tabPre-Owned$10.95or Best Offer+$4.51 delivery
- Splendid Girl's Brown Kitty Bralette Two Piece Bikini Swim Set Size 12Opens in a new window or tabBrand New$20.00or Best Offer+$6.55 delivery
- Girls Billabong Reversible Bikini Tropic Crush Size 12 Bathing Suit *A4Opens in a new window or tabBrand New$22.99or Best Offer+$5.99 delivery
- Hanna Andersson Girls Blue & White Striped Tankini Swim Top Size 12Opens in a new window or tabNew (Other)$14.99or Best Offer+$5.99 deliveryFree returnsTop Rated Plus
- Kids Reversible 1 Piece Swimsuit, Coral, Daydreamer "Feather 4 Arrow", Size 12Opens in a new window or tabBrand New$22.00or Best Offer+$6.29 delivery in 2-4 days
- under armour swimsuit Girls Size 12Opens in a new window or tabPre-Owned$9.99or Best Offer+$4.71 delivery
- Hanna Andersson Navy Blue Striped Rash Guard - Size 12 NWOTOpens in a new window or tabNew (Other)$18.00or Best Offer+$4.84 delivery
- Little Marc Jacobs Girls One Piece Striped Metallic Swimsuit Red Black Size 12Opens in a new window or tabPre-Owned$37.49or Best Offer+$4.95 deliveryExtra 30% off with coupon
- Snapper Rock Swim Girls Bikini Halter Top NEWOpens in a new window or tabNew (Other)$14.99or Best Offer+$5.00 delivery
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- Girls 11 piece Lot Swimsuits Bathing suits Cover Up Summer Size Large 10/12Opens in a new window or tabPre-Owned$24.00or Best Offer+$10.00 delivery
- NWT GAP KIDS Girls Size XL (12) Lot of 3 Bathing Suits/Swimsuits Colorful NEWOpens in a new window or tabBrand New$36.00Was: $45.0020% offor Best Offer+$9.45 delivery
- Lilly Pulitzer Girls size 12/14 Swim CoverOpens in a new window or tabPre-Owned$21.99or Best Offer+$5.00 delivery
From our popular brands
Based on number of views and purchases | Sponsored- SpeedoSpeedo Endurance Youth Green and White Swim Suit One Piece Girls Size 12Opens in a new window or tabPre-Owned$12.00+$5.31 delivery
- ROXYNWOT Roxy Girls Like Us Flutter Swim Set, Bright White Rainbow Size 12Opens in a new window or tabNew (Other)$19.99+$8.84 delivery
- ROXYRoxy Girls Bundle of Two Bikini Tops Size 12 (Girls)Opens in a new window or tabPre-Owned$16.00+$6.00 delivery
- SpeedoSpeedo Girls Swimsuit (2) BUNDLE SIZE 12Opens in a new window or tabBrand New$15.99+$6.55 delivery
- HurleyHurley Swimsuit Girls 12 Pink Purple Ombre Halter Tankini Boyshort 2 PieceOpens in a new window or tabNew (Other)$19.99+$5.99 delivery
- AthletaATHLETA GIRL Navy Blue + Pink Floral Island Time Girl's Takini Swimsuit Top L/12Opens in a new window or tabPre-Owned$14.99+$5.99 delivery
- NikeNike swimsuit, Women’s 24/00 Girls About 12Opens in a new window or tabPre-Owned$11.00+$4.71 delivery
- BillabongBillabong, Youth Girl’s Sun Dream One Piece High Neck Swimsuit, Pink, Size 12Opens in a new window or tabNew (Other)$42.75+$5.85 delivery
- NikeNWT Nike One Piece Black Blue Swimsuit NESS4038-494 Kid's Size 12Opens in a new window or tabBrand New$31.58+$6.95 delivery
- BillabongBillabong Kids Sunbeams Forever Bodysuit Size 12 Long Sleeve UPF 50+ NWTOpens in a new window or tabBrand New$35.00Free delivery
- AthletaAthleta Girl | Girl’s Sunny Flora Tankini Bathing Suit Set Size Large (12)Opens in a new window or tabPre-Owned$36.00+$6.84 delivery
- Kanu Surf Girls' Gigi Long Sleeve Rash Guard UPF 50 2-Piece Swim Set Size 12Opens in a new window or tabNew (Other)$14.50or Best Offer+$4.52 delivery in 2-4 daysFree returnsTop Rated Plus
- NWT Roxy Girls Paradise Trip Crop Top Bikini Swim Set Sz 12Opens in a new window or tabBrand New$25.00or Best Offer+$5.95 delivery
- Snapper Rock Girl's Size 12 One Shoulder Striped UPF 50 NWTOpens in a new window or tabBrand New$22.00or Best Offer+$5.35 delivery
- O’Neill girls one piece swimsuit 12Opens in a new window or tabNew (Other)$30.00or Best OfferFree delivery
- Sweet Honey Rash Guard Swimsuit Girls 12Y Pink Blue Floral Long Sleeve RuffleOpens in a new window or tabPre-Owned$13.95or Best Offer+$5.50 deliveryFree returnsTop Rated Plus
- Cat And Jack Girl’s Green One Piece Swimsuit L 10/12Opens in a new window or tabBrand New$20.27Was: $23.8515% offor Best OfferFree deliveryFree returnsTop Rated Plus
- NWT BMagical girls Swimsuit one piece & tulle skirt Cover Up size 12 SparklyOpens in a new window or tabPre-Owned$19.00or Best Offer+$5.50 delivery
- Ivivva NEW Water You Up To One Piece SPF Swimsuit Girls Size 12 By LululemonOpens in a new window or tabNew (Other)$24.99or Best Offer+$4.99 delivery
- Crewcuts J. Crew J.Crew Girls Pink & White Striped Seersucker Bikini Size 12 PolOpens in a new window or tabPre-Owned$26.99Was: $29.9910% offor Best OfferFree deliveryExtra 10% off with coupon
- Zara Solid Red Bikini Adjustable Straps 2 Piece Bathing Suit Girls Size 11-12Opens in a new window or tabBrand New$22.99or Best Offer+$7.50 delivery15 watchers
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- $355 Versace Kids Girls Pink Orchid & Logo Print One Piece Swimsuit Size 12Opens in a new window or tabBrand New$150.00Time left2d 11hor Best Offer+$6.55 delivery
- Lands’ End size 12 one piece cross back bathing suit tropical Hawaiian hibiscusOpens in a new window or tabPre-Owned$20.00or Best OfferFree delivery
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- Kanu Surf Girls' Flounce Bikini Beach Sport 2 Piece Swimsuit Multi Size 12 1596Opens in a new window or tabNew (Other)$14.00or Best Offer+$5.00 deliveryFree returnsTop Rated Plus
- Kids Reversible Swimsuit 1 Piece "Feather 4 Arrow", Size 12, multicolor, wavesOpens in a new window or tabBrand New$21.00or Best Offer+$6.29 delivery in 2-4 days3 watchers
- JANIE AND JACK Girls Blue I Coral Ruffled Edge Swim Suit Bikini I Size 12 EUCOpens in a new window or tabPre-Owned$18.00or Best Offer+$6.55 delivery
- Bella Dahl Ruched Bikini Bottom and Top Size 12Opens in a new window or tabNew (Other)$26.00or Best Offer+$4.71 delivery
- Roxy size 12 girls one piece zip swimsuit rash guard new with tagsOpens in a new window or tabBrand New$27.99or Best Offer+$4.84 delivery
- ROXY~NEW~2 Pc Rashguard L/S Swim Shirt & Bikini Bottoms Set~Girls Size 12~NWTOpens in a new window or tabBrand New$24.95or Best Offer+$4.00 deliveryFree returns2 watchersTop Rated Plus
- Speedo Girls Swimsuit (2) BUNDLE SIZE 12Opens in a new window or tabBrand New$15.99or Best Offer+$6.55 delivery
- NWT Speedo Girls One Piece Swimsuit Pro LT Solid‎ Blue Youth Swim Size 12/28Opens in a new window or tabBrand New$19.99or Best Offer+$5.25 delivery
- CREWCUTS Girls UPF 50+ Swimming Long Sleeves Top Sz 12Opens in a new window or tabPre-Owned$19.99or Best Offer+$4.84 delivery
- Speedo Girls Bikini Swim Top Sz 12 Crop Blue & Green Ocean Beach Print BraletteOpens in a new window or tabBrand New$14.00or Best Offer+$4.75 delivery
- Vintage Pocahontas Swimsuit Teal Green Girls Size 12 New Old Stock Disney 90sOpens in a new window or tabBrand New$99.95or Best Offer+$7.01 delivery
- NWT Seafolly Girls Saint Lucia Surf Set 2pc Green Floral Sz 12 AUOpens in a new window or tabBrand New$49.99or Best Offer+$5.50 delivery
- Roxy Girl’s Pink Flutter Two Piece Swimsuit Bikini Set Size 12 NWT $46Opens in a new window or tabBrand New$27.00or Best Offer+$4.57 delivery
- Adidas Shorts Swim Kids Medium 10/12Opens in a new window or tabPre-Owned$18.00or Best OfferFree delivery
- Roxy Girl’s Two Piece Blue Floral Bikini Swimsuit Set Size 12Opens in a new window or tabBrand New$39.90or Best Offer+$6.55 delivery
- Juicy Couture Black Label Pink White Striped Crochet One Pc Swimsuit Girl SZ 12Opens in a new window or tabBrand New$59.99or Best Offer+$7.00 delivery
- Girls Eddie Bauer Swim Rash Guard, Reversible Bottom & Shorts M 10/12Opens in a new window or tabPre-Owned$18.99or Best Offer+$5.31 delivery
- Billabong Kids Sunbeams Forever Bodysuit Size 12 Long Sleeve UPF 50+ NWTOpens in a new window or tabBrand New$35.00or Best OfferFree delivery
- Gap Bikini Set Teen Size 12 Purple New With Tags.Opens in a new window or tabBrand New$10.00Time left3d 6hor Best Offer+$4.51 delivery
- NEW Janie and Jack Pink and White One Piece Swimwear size 12Opens in a new window or tabBrand New$29.00or Best Offer+$4.52 delivery
- Mini Boden Rainbow Sun Applique Blue One Piece Halter Neckline Swimsuit 11-12YOpens in a new window or tabPre-Owned$13.29Was: $18.9930% offor Best Offer+$4.25 delivery in 2-4 days
- Hobie Girl Halter Bikini Top Bottom Swimsuit Set sz 12 - Terry Orange NWT $43.00Opens in a new window or tabBrand New$28.00or Best Offer+$6.55 deliveryExtra 15% off with coupon
- Stella Cove Girls Sugar Skies One Piece Tank Swimsuit 12 Pastel Tie Dye NWOT NewOpens in a new window or tabNew (Other)$34.99or Best Offer+$6.55 delivery
- Mini Boden Short Sleeve Swimsuit Girls 11/12 Light Blue Rainbow Clouds Zip FrontOpens in a new window or tabPre-Owned$16.00or Best Offer+$4.84 delivery
- Girls Matilda Jane Lets Go Together Relay Swimsuit Size 12 Great Used ConditionOpens in a new window or tabPre-Owned$29.95or Best Offer+$5.62 delivery
- Wonder Nation Girls Swim Wear Tank/Shorts Floral Print Top M 7/8 Bottom L 10/12Opens in a new window or tabBrand New$12.00or Best Offer+$8.84 delivery
- NWT BILLABONG Kids Medallion Moon Tribe High Neck One-Piece Girl’s Size 12Opens in a new window or tabBrand New$28.99or Best Offer+$5.00 delivery
- Billabong NWOT Girls Tropic Tides One-Piece Swimsuit In Marina Size 12 BeachOpens in a new window or tabNew (Other)$18.75Was: $25.0025% offor Best Offer+$5.99 delivery
- Stella McCartney L5535 Kids Rainbow Bikini Girls Size 12 / 14 Lot Of 3 JusticeOpens in a new window or tabPre-Owned$37.50Was: $74.9950% offor Best Offer+$9.00 deliveryFree returnsExtra 10% off with couponTop Rated Plus
- Snapper Rock Girls Pink Hawaiian Floral Triangle Top Bikini Set Size 12 11-12yrsOpens in a new window or tabPre-Owned$11.28or Best Offer+$6.30 delivery
- NEW Athleta Girl Rashguard Mock Neck Blue Tie Dye Sz 12 Large Swim Shirt NWTOpens in a new window or tabBrand New$18.00or Best Offer+$4.25 delivery
- The Finals Tropic Party Non-Foil Wing Back One Piece Swimsuit, Youth 26 L 10/12Opens in a new window or tabBrand New$9.49Was: $9.995% offor Best Offer+$4.62 deliveryFree returnsTop Rated Plus
- Minecraft Girls Bathing Suit Size 11/12Opens in a new window or tabNew (Other)$15.00or Best Offer+$7.00 delivery
- Nike Girls Swim Size 12 Tankini Top Strappy Back Pink Purple Orange Stripes BraOpens in a new window or tabPre-Owned$14.99or Best Offer+$5.99 deliveryFree returnsTop Rated Plus
- J.Crew Girls’ Short-Sleeve One-Piece Swimsuit In Seersucker W/ UPF 50+ Sz. 12Opens in a new window or tabPre-Owned$16.99or Best OfferFree delivery
- NWT Janie And Jack Girls Two Piece Floral Swimsuit, Size 12Opens in a new window or tabBrand New$29.99or Best Offer+$4.84 delivery
- O'NEILL 296604 Girls Margot Knot Swim Complete, In the color slate Size 12Opens in a new window or tabBrand New$41.30List price: $69.0040% offor Best Offer+$3.60 deliveryFree returnsTop Rated Plus
- Shade Critters Girl’s Pink Sequin One Piece Swimsuit Size 12Opens in a new window or tabNew (Other)$41.80or Best Offer+$6.55 delivery
- Tea Collection Rash Guard one piece Swim Girl Watermelon size 12Opens in a new window or tabPre-Owned$12.50Was: $24.9950% offor Best Offer+$6.00 delivery in 2-3 daysFree returns
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