Kim Kardashian and Nicole Richie showed some serious skin last night, stepping out to two different events in two very revealing cutout dresses.

Both women turned heads at fashion events in NYC on Wednesday, Nicole looking sexier than ever at the 9th Annual Style Awards and Kim flaunting her famous curves at a launch party for DuJour Magazine.

Kim and Nicole both put their cleavage and sexy backs on display in their dresses and kept their color palettes simple in black and white.

While both of them looked amazing, we want to know who you think looked hotter.

Our money's on Nicole Richie -- do you agree? Check out their hot outfits from every angle in the gallery above, then vote below!