Iggy is the quintessential pop star name, though it's the nickname Cate Blanchett uses for son Ignatius. Iggy does bring any grander-sounding name down to earth.

Diminutive of Ignatius or its female form Ignatia – or, if you're thinking outside the box, of Ingrid or even Indigo. British actor, presenter and comedian Noel Fielding named his second daughter Iggy in 2020.