Jessica Biel is white hot!

The future Mrs. Justin Timberlake stunned on the red carpet at Sunday's MTV Movie Awards in L.A., opting for a long sleeve white knit dress by Chanel. Looking summery chic with her hair worn down and loose, Biel flashed the ultimate accessory for photographers before heading into the show to present a golden popcorn trophy: Her custom made $130,000 engagement ring from Timberlake.

Also turning heads at Sunday's big show? New mom Charlize Theron, who wowed in a red Lanvin frock and strappy sandals. The elegant sheath was a must for Theron, because of its ease of wear. "You have to just not try to be trendy and do what's comfortable," the Prometheus actress told MTV's Kat Graham of her look. "At the end of the day, I have to put it on and look like me."

PHOTOS: MTV Movie Awards 2012: What all the stars wore

For more of the hottest styles from Sunday's red carpet, check out our video recap above.

Tell Us: Which MTV Movie Awards look was your favorite?

This article originally appeared on MTV Movie Awards: Jessica Biel Stuns in Chanel, Flashes Engagement Ring on Red Carpet