The X Factor host has swapped her blonde locks for a daring new 'do, following in the footsteps of Kelly Osbourne, Jessie J and Nicole Richie, who have all experimented with the unusual shade.
Caroline had revealed her new look via Instagram ahead of the awards show, telling fans: "Might have purple hair."
It seems the bright purple shade was toned down ahead of her red carpet appearance, with splices of silver added to her locks.
Lilac and purple hues have been big news over the past year, with a slew of celebrities opting for the pretty shades over more traditional colours. Other ladies to rock the look include Little Mix's Perrie Edwards, former The Hills star Audrina Patridge, Katy Perry and ex-TOWIE star Maria Fowler.
Caroline, meanwhile, is no stranger to switching up her locks having tried a bright pink colour earlier in the year.
The Daily Mirror's Pride of Britain Awards celebrate the achievements of truly remarkable people. The ceremony airs on Thursday, 1 October at 8pm on ITV.
X Factor's most shocking moments: