Perhaps the recent experience of her short-lived marriage has brought her a new perspective or maybe it was the venue - an exclusive hotel in central London.
But Peaches Geldof looked more demure than she ever has as she swept into an evening gala wearing a floor-length Forties organza gown.
And with her tresses coiled up loosely into a partial updo and most of her 20 tattoos covered up, the 19-year-old was clearly trying out a sophisticated new look.
The leader of the junior rock chick set, who's back in London following her divorce from American singer Max Drummey, showed off her chic approach at the Children's Champion Awards.
Also on the guest list were Emma Bunton, who was glam in a lacy LBD and Amanda Holden, on sparkling form in a sequinned gold slip.