Rachel McAdams' new look is totally giving Janis Ian. That's right, the Mean Girls alum no longer resembles Regina George, as she kissed her blonde stye goodbye and debuted a dramatic dark hair color.

Revisit the Red Carpet from the Original Mean Girls Premiere 20 Years Ago ... but ‘I Pinch Myself Every Day' Rachel McAdams Just Dyed Her Hair Dark — and It's Giving Us Flashbacks to Her ...

From Mean Girls to True Detective, Rachel McAdams could give a TED talk on how ... She flops onto a sofa, a mug of green tea in hand, her hair the perfect mess, to discuss activism, adventures ...