I've always thought if I was a celeb I'd use
Shalom Tigerlily for a girl or maybe Lotus-Blossom
Skye. I'm liking Tigerlily / Tiger-Lily at the moment, almost tempted to consider using it for real life!
For a boy
Kit Lascelles Sacheverall maybe? Not very celeb-like though, just long and a bit pretentious!