Who? Rosamund Pike.
What? Stealing Tom Cruise's thunder in a canary-yellow backless dress by Alexander McQueen. The actress looked flawless in the floaty number, that showed off her teeny-tiny frame, and paired it with an elegant updo, bright cornflower-blue heels and earrings from Noor Fares.
Where? The Jack Reacher premiere, London, 10 December.
Verdict? A much-needed ray of sunshine that definitely brightened up a dark night in Leicester Square. Nice work, Rosamund.