Khloe Kardashian, Kendall and Kylie Jenner may not have attended the actual ceremony, but they certainly stole the spotlight at the GQ and Giorgio Armani soiree.
Khlo showed some major skin in a sparkling black dress with a thigh high split from designer Constantina & Louise, while Kendall took the plunge in a black gown with lace paneling. Kylie stood out from her older sisters in a sexy, backless silver number with cut-out details at the waist.
The trio looked like they were having a blast at the star-studded bash as they put their derrieres on display for their Instagram fans.
Kim Kardashian and Kanye West didn't join their famous family members at the after-party, but they did cause quite a stir on the red carpet!
The cute couple packed on the PDA for photographers, who even snapped the rapper grabbing his wife's booty!
Meanwhile, Taylor Swift seems to have made up with Diplo after their very public four-month feud.
The DJ, who joined Madonna on the red carpet, posted a friendly photo of the pair on Instagram, writing, "Then this happened @taylorswift vs taylor spliff #grammys2015," he wrote.
The duo's disdain for each other began back in November, after Diplo weighed in on the "Blank Space" singer's fight with his then-girlfriend Katy Perry.
Looks like T.Swift was able to shake it off!
Other celebrity sightings included big winner Sam Smith, Ed Sheeran, Paris Hilton, Michelle Rodriguez, Miranda Kerr, and many, many more. Check out the gallery above to see all the crazy after-party pics -- including Charlie XCX rocking a cat suit!
Watch the video above to see the can't-miss fashion from the red carpet ... and click through the gallery below to see the killer Grammy moments you didn't see on TV!
And be sure to check out all of our Grammy Awards coverage below:
Grammy Awards Fashion: See the Most Outrageous Outfits
Blue Ivy Steals Rihanna's Attention During the Grammy Awards
The Can't-Miss Moments from the 57th Annual Grammy Awards
57th Annual Grammy Awards -- See The Complete Winners List
