When Rachel McAdams [1] stepped onto the blue carpet of the Critics' Choice Awards [2], we knew immediately, this is a look we won't soon forget. The True Detective star chose a stunning floor-length Elie Saab gown with chain straps and sexy, sheer paneling — a fresh spin on the naked dress trend [3].

The sexy look is a far cry from Rachel's Lanvin gown at the Golden Globes [4], but both dresses were major style wins for the stunning star. Read on for a look at the gorgeous maroon maxi dress, and then check out the other stunning looks from tonight's big event [5].