Credit: Steve Granitz/WireImage

Where's Jessica?

Justin Timberlake was a mama's boy at Sunday's Academy Awards in Hollywood.

The singer and Social Network star, 30, came to the Oscars bash with his mom Lynn Harless -- and not longtime love Jessica Biel.

Timberlake, who was snubbed for his portrayal of Sean Parker in the acclaimed flick, didn't explain why his mother and not his love of over two years was his date.

But he did clear up a recent Interview mag article in which he insisted "I'm not an a**hole!" He told Ryan Seacrest on the red carpet that most actors think of musicians as "divas" with "huge riders."

Timberlake wore a custom-made Tom Ford tux. "I'm not allowed to eat in this suit!" As for his mom? Harless wore Lanvin -- the same exact gown worn by Natalie Portman at the Governors' Awards in November!