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- FINA APPROVED YINGFA WOMEN'S GIRL 925 RACING TRAINING KNEESKIN SWIMWEAR ALL SIZEOpens in a new window or tabBrand New$39.99Buy It Now+$4.99 deliveryfrom China
- Toobydoo Girl's Fun Dots Bandeau Bikini (Toddler/Little Kids/Big Kids) BlueOpens in a new window or tabBrand New$31.49Was: $44.9930% offor Best Offer+$8.00 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-Karla Vivian Child 2 Piece Bathing Suit/Bikini-Blue & White Polk A Dot-Sz 12Opens in a new window or tabBrand New$39.99Buy It Now+$6.14 delivery
- Girls Swimwear Size 12 Breaking Waves Tankini Set Speedo Top Lands End Skirt LotOpens in a new window or tabPre-Owned$27.37or Best OfferFree deliveryFree returnsTop Rated Plus
- VTG Gymboree Terry Cloth Swim Cover Up Girls 12 Striped Full Zip Hooded BathingOpens in a new window or tabPre-Owned$25.00Buy It Now+$8.25 delivery
- Lands End Girls Long Sleeve Rash Guard Swim Shirt Bright Bold Flowers Size 12Opens in a new window or tabPre-Owned$8.96Was: $9.9510% offor Best Offer+$5.80 deliveryFree returns
- TUCKER + TATE Leopard Print SWIM 2 PIECE BIKINI SET BLack WHITE SIZE 12 $52Opens in a new window or tabPre-Owned$16.95Buy It Now+$6.55 delivery
- Roxy Girls' Kind of Fun Short Sleeve Lycra Swim Set Multi Size 12Opens in a new window or tabNew (Other)$22.49Was: $29.9925% offBuy It Now+$7.35 delivery
- Justice Swim Shorts Girls Size 12 Multicolor Polka Dot Spellout EUCOpens in a new window or tabPre-Owned$12.59or Best OfferFree delivery
- Roxy One Piece Swimsuit Girls Size 12Opens in a new window or tabBrand New$30.00or Best Offer+$4.71 delivery
- Hanna Andersson Summer Fun Swim Dress Size 12 EUC!Opens in a new window or tabPre-Owned$20.00or Best Offer+$8.71 delivery
- NWT Volcom Big Girls Fun Dip One Piece Swimsuit Multi Size 12Opens in a new window or tabBrand New$11.19Was: $15.9930% offor Best Offer+$8.00 delivery
- Cat & Jack Rainbow Ombre Unicorn Stars Strappy One Piece Swimsuit Size L 10/12Opens in a new window or tabBrand New$16.99Was: $19.9915% offor Best Offer+$5.50 delivery
- Snapper Rock Girls Tasseled Caftan Swimsuit Cover Up, Sz 12, Blue PinkOpens in a new window or tabPre-Owned$10.00Buy It Now+$5.00 delivery
- LANDS' END Girls Rash Guard Swim Shirt sz Large 10 - 12 Short Sleeve Lined FrontOpens in a new window or tabPre-Owned$13.97or Best Offer+$6.55 delivery
- NEW GIRLS SPEEDO SWIMSUITS! CUTE, FUN, & SPORTY! VARIETY OF STYLES, COLORS, SIZEOpens in a new window or tabNew (Other)$16.50Buy It Now+$4.00 deliveryExtra 20% off with coupon
- NEW Joe Boxer Junior's Swimming Suit BLACK PINK Girl's Size 12 Halter 2PC SwimOpens in a new window or tabBrand New$13.99Buy It Now+$7.50 delivery
- Angel Beach Rainbow Unicorn Dog Cupcake Stars Strappy One Piece Swimsuit Size 12Opens in a new window or tabBrand New$18.69Was: $21.9915% offor Best Offer+$5.50 delivery
- TEA COLLECTION GUC Teal Swim Bottoms/Boy Shorts GIRLS Size 12Opens in a new window or tabPre-Owned$10.00or Best OfferFree delivery
- More Then Magic Chriss Cross Back UPF 50+ 2 Pc. Turquoise Bikini Girl's 10/12Opens in a new window or tabBrand New$16.00or Best Offer+$5.90 deliveryFree returnsTop Rated Plus
- Girls Vintage 90s Speedo Blue Tang Fish Pattern Print Athletic Racer Back Sz 12Opens in a new window or tabBrand New$25.00or Best OfferFree deliveryFree returnsSave up to 20% when you buy more
- Roxy Girl's Sebastian The Little Mermaid Floral One-Piece, Multicolor, 12Opens in a new window or tabBrand New$29.50Was: $59.0050% offBuy It Now+$18.95 deliveryFree returnsTop Rated Plus
- Kuna Surf Swimsuit Girls 12 One Piece Daisy Pink Beach Sport V-Neck Stretch FunOpens in a new window or tabBrand New$13.49Was: $14.9910% offBuy It Now+$6.99 deliveryFree returns
- Kanu Surf Girls SIZE 12 Girls Tie Dyed 2 Piece Swimsuit, MSRP $39 NWT BandeauOpens in a new window or tabBrand New$26.50or Best Offer+$4.71 delivery
- NWT Dolfin Uglies Girl's Size 12 Blue Stars Floral One Piece Swimsuit UPF 50+Opens in a new window or tabBrand New$18.63or Best Offer+$5.99 deliveryFree returnsBenefits charityTop Rated Plus
- BETSEY JOHNSON Girls Size 12 Rash Guard Swim Suit Top Mermaids Have More FunOpens in a new window or tabPre-Owned$15.00or Best Offer+$4.62 delivery
- Cat & Jack Purple Striped Flamingo Ruffle Straps One Piece Swimsuit Size L 10/12Opens in a new window or tabBrand New$16.99Was: $19.9915% offor Best Offer+$5.50 delivery
- Toobydoo Sienna Ruffle Blue Bikini Top L128646 Girls Size 11/12 USOpens in a new window or tabBrand New$26.99Was: $29.9910% offBuy It Now+$5.20 deliveryFree returnsExtra 17% off with couponTop Rated Plus
- Kids Halloween Swimsuit #1 - Baby Girl Teens Bathing Suit Scary Fun PumpkinsOpens in a new window or tabBrand New$45.00Buy It NowFree delivery
- Kids Pinball Wizard Swimsuit #1 - Baby Girl Teens Bathing Retro Arcade Games FunOpens in a new window or tabBrand New$45.00Buy It NowFree delivery
- Girls 12 Despicable Me Hot Pink Minion Halter One Piece SwimsuitOpens in a new window or tabPre-Owned$14.00or Best Offer+$5.95 delivery
- Seafolly L49425 Kids Black Fun Run Two-Piece Swim Set Size 12Opens in a new window or tabBrand New$35.00Was: $50.0030% offBuy It Now+$5.20 deliveryFree returnsExtra 17% off with couponTop Rated Plus
- NWT Justice For Girls 2 Piece /shining green Swim bathing Suit Sz 12 Adjust StpOpens in a new window or tabBrand New$14.00Buy It Now+$6.55 delivery
- Treasure & Bond Kids Reversible Two-Piece Bikini Swimsuit Leopard Sz 12Opens in a new window or tabNew (Other)$19.99or Best Offer+$5.50 delivery
- BMAGICAL by btween Girl’s One Piece Swimsuit Size 12Opens in a new window or tabPre-Owned$14.99or Best Offer+$6.50 deliveryBenefits charity
- Polo Ralph Lauren Girls Pink Tie-Dye One-Piece Swimsuit Size 12 POLOOpens in a new window or tabPre-Owned$45.60Was: $57.0020% offor Best Offer+$5.99 delivery
- Girls Gymnastics Fun Print All-Over Print Youth Swimsuit Size 8 to 20Opens in a new window or tabBrand New$42.95Buy It Now+$3.99 delivery
- Kids Halloween Swimsuit #2 - Baby Girl Teens Bathing Suit Scary Fun PurpleOpens in a new window or tabBrand New$45.00Buy It NowFree delivery
- Draper James x Lands End Girls Peach Print One Piece Swimsuit, 12+ (k9)Opens in a new window or tabPre-Owned$28.00or Best Offer+$5.62 delivery
- Treasure & Bond Kids Reversible Two-Piece Bikini Swimsuit Tie Dye & Stripe Sz 12Opens in a new window or tabBrand New$15.00or Best Offer+$5.50 deliveryLast one
- Toobydoo L112862 Girls Blue Fun Dots Bandeau Bikini Swim Set Size 11-12 YOpens in a new window or tabBrand New$40.50Was: $45.0010% offBuy It Now+$5.20 deliveryFree returnsExtra 17% off with couponTop Rated Plus
- NWT Gymboree Girls Swim Shop/Swimwear 6 7 8 10 12 Swimsuit 1 Piece Fun at HeartOpens in a new window or tabBrand New$18.95Buy It NowFree delivery in 2-4 days
- J.Crew tie dye pink core Girls' bow bikini bottom 12Opens in a new window or tabNew (Other)$14.99Buy It Now+$4.99 delivery in 2 days
- Kortni Jeane Youth Magenta Pink Ruffle High Waisted Swim Bottoms Size 12/13Opens in a new window or tabPre-Owned$28.00or Best Offer+$4.57 delivery
- New Speedo swimsuit one-piece Performance Racing Youth 6/22 8/24 12/28 girl $66Opens in a new window or tabBrand New$29.99Buy It Now+$4.65 delivery
- Kanu Surf Girls' Daisy Beach Sport Swimsuit - Daisy Pink - Size 12Opens in a new window or tabBrand New$13.00Buy It NowFree delivery
- Big Chill Girls' One Piece Swimsuit with Fun Prints UV Protect Black Size 10/12Opens in a new window or tabBrand New$14.99Buy It NowFree deliveryFree returnsTop Rated Plus
- Volcom L13428 Girls Multicolor Fun Dip Crop Swim Set Size 12Opens in a new window or tabBrand New$40.50Was: $54.0025% offBuy It Now+$5.20 deliveryFree returnsExtra 17% off with couponTop Rated Plus
- Summer Camp Mola MolaKids Disco Alley MILA ENTERO One Piece Swimsuit Sz 12Opens in a new window or tabBrand New$40.00or Best Offer+$6.55 delivery
- Kortni Jeane High Waisted Swim Bottoms Colorful Green Terrazzo Girls Size 12/13Opens in a new window or tabPre-Owned$28.00or Best Offer+$4.57 delivery
- 90s 80s Retro 3D Colorful Ocean Waves Wavy All-Over Print Youth SwimsuitOpens in a new window or tabBrand New$34.99Buy It Now+$4.69 delivery
- Justice Girls Sun/Fun Double Sided Sequin Swim Suit Black/Pink Size 12Opens in a new window or tabPre-Owned$25.00or Best Offer+$7.35 delivery
