Kelly Osbourne's powers of persuasion were called upon last night, when she was invited to join a debate panel to celebrate the launch of the Huffington Post UK.
Perhaps better known for her love of rock-chick leather, thigh-grazing minis and bold bright style statements, Kelly got her serious face on to wade into a discussion on the state of the media, donning a demure - and even, conservative - calf-length LBD and matching black heels.
There was a tiny hint of the Kelly O we know and love though, in the form of a neon yellow hairbow and some feline winged eyeliner.
Miss Osbourne joined Shami Chakrabarti, Richard Bacon, Arianna Huffington, Alistair Campbell, Celia Walden and John Gaunt on the HuffPost UK discussion panel.
Read the live blog coverage from the HuffPost UK debate here