Let's make this birthday one to remember.

31 years old (Born on November 19, 1993)

Happy Birthday, Cleo Massey! From your unforgettable days splashing around as Kim Sertori on "H2O: Just Add Water," you've charmed audiences worldwide with every hilarious one-liner and mischievous grin. You truly had us believing that sibling rivalry—and mermaid drama—are equally entertaining!

As you celebrate another fabulous chapter, we're reminded just why fans continue binge-watching your iconic role years later—you made teenage antics under the sea hilariously relatable to all of us land dwellers. Here's wishing our favorite trouble-stirring Aussie actress endless joy, laughter (and perhaps fewer run-ins with mermaids) in this exciting new year ahead!