1. Abroda Mermaid Tail Bikini Swimwear for Age 3-10 Years Girls 3 Pcs Fancy Swimmable Sea-maid Costume SW019_Pink_120 (Click Link to Check Price on Amazon)
Editor's Rating : 9.2 out of 10
Material:polyester+Milk silk FabricTop Bikini design:shell design,fashion,lovely,comfortable wearing

2. Kasual Girl's Swimsuit 3Pcs Sets Bikini Sunsuit Bathingsuit , Size 8,Sky Blue (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Suitable Ages: 3-8YearsGirls Stretchy Mermaid Tail Swimmable Monofin Capable Swimsuit Set.

3. Girls' Cute Mermaid Swimsuit Gift Children's Day Gifts for Toddlers (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
Material: Polyester+Nylon Stretchy and comfortable mermaid swimsuit for girls.

4. Girls Kids 3pcs Mermaid Tail Tankini Swimsuits Bikini Bathing Set Swimwear (Click Link to Check Price on Amazon)
Editor's Rating : 9.7 out of 10
Hollow out tail bottom, easy to stand and walk aroundFashion style, looks very nice. Best birthday gifts for little girls and baby girls who have a mermaid dream

5. AMENON 3PCS Kids Mermaid Tail Swimsuit Princess Bikini Set Swimwear Can Match Monofin (With Random flower clip or garland) (M(5T)/ 4-5Y, Elsa) (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
❊Latest In Version:a)Shell Bikini+Sparkling Tail:inspired by mermaid fairy tale,cute and lively b)Dream Wings Upgrade,mysterious and elegant. Two series meet different girls in ages range from 2-12Y. Because the tail dress is in long style so you can also select for your princess if she is tall or teen girls.❊Hot Dual-purpose Style:Opened for walking, closed for matching Mono Fin.Real swimmable mermaid tail(Note: Monofin not included,please buy separately)