princess jellyfish dress I haven't read it, but maybe you're thinking of Jellyfish? The in this illustration has a similar silhouette Lace Style Kuranosuke Koibuchi (Princess Jellyfish) by
Description
Long-Sleeved Floral Patterned Wedding Gown Designed in the most breathtaking floral pattern, turn heads in this long-sleeved wedding dress from Martina Liana

And that's not the only awards show Harry has made a lasting impression at

Measurements: This is an XS/teen size but I couldn't resits buying it

A fresh take on a timeless pattern, this navy and white polka dot mini is the epitome of polished playfulness

Item Descriptions: Product number: DS158