11/07/2013 19:48 BST | Updated 22/05/2015 10:12 BST

Sienna Miller Is The Perfect Print-Cess On Jonathan Ross

Who? Sienna Miller.

What? Proving she really is a yummy mummy in a print-perfect purple, red and white Peter Pilotto minidress, Sienna wowed on The Jonathan Ross Show on Saturday night, where she revealed her godmother accidentally bought her a pair of crotchless knickers from Agent Provocateur and, soon after, she got pregnant...

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Sienna was joined on the show by Jamie Oliver - who helped her and Ellie Simmonds cook up some festive treats - Michael McIntyre, Charlotte Church and Sheridan Smith.

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Where? The Jonathan Ross Show Christmas Special, 22 December.

Verdict? We love the tousled bun and slightly hippy-ish look on Sienna. Do you agree? Leave a comment below and see more Sienna here: