1 of 7
The singer hit the red carpet with his brothers in a Versace tuxedo, but got casual on stage, alongside Stevie Wonder, adding a David Yurman bracelet and Avakian necklace to his vest and T-shirt.
2 of 7
3 of 7
The Grammy winner sparkled on the red carpet in her beaded Zuhair Murad gown, but showed off her incredible legs in a chiffon-sleeved minidress while performing "Last Name."
4 of 7
The singer was perfectly chic on the red carpet in her pleated RM by Roland Mouret dress, amping up the sparkle in her clinging black dress for her performance of "You Pulled Me Through."
5 of 7
The typically cheeky singer wore an elaborate pink gown from Lebanese designer Basil Soda for her arrival, but got the crowd rocking with her fruit-themed mini, custom-designed by The Blondes for her performance of "I Kissed a Girl."
6 of 7
The British singer looked to the future for her hard-edged silver dress on the red carpet and her jeweled metallic mini while performing "American Boy" with a coordinated Kanye West.
7 of 7
The very pregnant star showed off her funky style with a bold blue Manish Aurora dress, matching Christian Lacroix for Gola sneakers and Erickson Beamon jewelry. For her performance, the rapper chose a see-through House of Holland dress and more Erickson Beamon earrings.
HGTV's Nicole Curtis Claims Her Ex Told Her to 'Put Your Boob Away' During Breastfeeding amid Custody Battle
Hello! Cate Blanchett Joins Drag Show Performance of Adele for Charity
FULL EPISODE | People Now Tuesday February 21, 2017
The Stars of The Hills: Where Are They Now?
David Cassidy Feared Fans Would Mistake His Dementia for Alcohol Abuse: 'It's a Tricky Business'