While she usually rocks long locks, the model showed off her much shorter blonde tresses via Instagram on Sunday.
Posing with her hairstylist in the candid snap, the former Victoria's Secret model looked gorgeous with her voluminous tresses on display.
"Ready for 2015 equipped with a fresh new do! Thank you to my favourite brother sister hair duo...@georgenorthwood @sallynorthwood #ShortHairDontCare #GeorgeNorthwood #SallyNorthwood #BeThereOrHaveBadHair," she captioned the cute pic.
The shoulder-length cut is definitely a drastic change from Whiteley's longer blonde hair -- but we also think the 27-year-old looks stunning with her locks parted to the side.
What do you think of Rosie's hair makeover? Tell toofab in the comment section below and click "Launch Gallery" above to see more stars who've gone long and short!