Actor/singer Justin Timberlake (L) and his mother Lynn Harless arrive at the 83rd Annual Academy Awards held at the Kodak Theatre on February 27, 2011 in Hollywood, California. (Getty Images)more pics » 
Justin Timberlake (Getty Images) Justin Timberlake has a very mysterious relationship with longtime girlfriend Jessica Biel -- and reminded us all how little we know about the couple at Sunday's Academy Awards. How so? He brought mom Lynn Harless to the big night in lieu of Biel!Amidst rumors that JT is cheating on Biel with Olivia Munn, The Social Network actor kept mum about why he chose Mom as his date. But he did look dashing in that Tom Ford suit. "I'm not allowed to eat in this suit!" he exclaimed. Mom didn't look too shabby either -- she showed up in the exact same (but different color) Lanvin gown that Natalie Portman wore to Governors' Awards in November. And we know anything that girl does right now...is cool no matter what.
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