Sidibe had previously sent out a half-joking public plea to Justin Timberlake to be her escort at the Academy Awards on March 7.
"I want to make Justin Timberlake and [The Hurt Locker actor] Anthony Mackie fight it out for the honor of being my date," Sidibe told the Canadian entertainment TV show eTalk. "I'm just going to throw them in the ring and make them do it!"
But apparently the throw-down didn't happen. Instead, Sidibe will be accompanied by someone even more special to the actress. "I'm bringing my mom," she told PEOPLE Thursday at Eve Ensler's annual V-Day luncheon to raise awareness about violence against women.
Search for a GownWith her date dilemma settled, Sidibe is now focusing on what to wear. "My stylist sent me sketches, but I haven't looked at them yet," she says. "I certainly won't go for a daring dress. I don't like to do more than one color, or stripes, or patterns. I'll certainly pick something classic."
Charlize Theron, Rosario Dawson and Jane Fonda also attended the event in L.A. Thursday, where Sidibe performed a reading from Ensler's new book, I Am an Emotional Creature. But the busy nominee said she wasn't nervous to be performing for the esteemed audience.
"I'm not necessarily nervous about them, but I'm nervous because I'm tired," she confessed. "I haven't taken a day off since Sundance 2009!"
Next up for Sibide after picking a gown for the Oscars is planning a vacation. "I want to go some place where there's a beach," she says, "and no one knows who I am!"
The 82nd Annual Academy Awards will be presented on Sunday, March 7, and televised live on ABC beginning at 5 p.m. PT/ 8 p.m. ET.