The Anyone But You star is clearly using fashion to stave off the winter blues. In a series of photos and a video shared to Instagram, Sweeney offered a daring (and topless) take on winter style ...

The actor took her knitted Miu Miu cardigan and matching Miu Miu bag ... though Sweeney skipped that step and wore it open and shirtless for her pics. The cardigan is made with pure cashmere ...