sunglasses Hilary Duff  stripes spandex nine zero one cartigan heels hair

Hilary Duff entered Nine Zero One salon in West Hollywood on Thursday looking a little bit drab, but exited with gorgeous golden locks worthy of a hair commercial.

We love Duff's colorful top and sweater, paired with sliming black tights, a green Goyard tote and sexy blue heels -- she's getting so thin!

The former Disney star, who welcomed baby Luca in March, is plunging right back into work after taking a maternity leave from the biz. She just finished filming the comedy She Wants Me, costarring Charlie Sheen, and is planning to release her next novel by the end of the year. Keep workin' it, girl!