She's played Betty Draper, Fat Betty Draper, Emma Frost, and one of the slutty American girls from Love Actually. Is January Jones now preparing for a reprisal role as G.I. Jane? Nah, her hair's just falling out in clumps.
'I have been every colour and now my hair is falling out in clumps,' she told us. 'I've been blonde, red with extensions for this film, then blonde, then black, and now blonde again. I'm going to have to shave it off and wear a wig.'
[Images via AP and WENN]