These Mermaid sets have little shell sequins on them and a long tail at the back.

The approximate measurements are 

Small Top - 16cm down front not including the shoulder straps and 36cm across front when stretched.                                                                                                                           Small Skirt - 36cm across waist when stretched, 30cm from waist down front of skirt and 63cm from waist down back of skirt to the tip of the tail.

Medium Top - 18cm down front not including the shoulder straps and 38cm across front when stretched.                                                                                                                       Medium Skirt - 38cm across waist when stretched, 32cm from waist down front of skirt and 65cm from waist down back of skirt to the tip of the tail.

Large Top - 20cm down front not including the shoulder straps and 42cm across front when stretched.                                                                                                                           Large Skirt - 40cm across waist when stretched, 33cm from waist down front of skirt and 66cm from waist down back of skirt to the tip of the tail.

X-Large Top - 21cm down front not including the shoulder straps and 45cm across front when stretched.                                                                                                                       X-Large Skirt - 40cm across waist when stretched, 34cm from waist down front of skirt and 67cm from waist down back of skirt to the tip of the tail.