"I screwed up so hard in my speech," the red-faced star said backstage at the awards show in Los Angeles.
"I think Mo'Nique said it best, you just don't want to know or think or assume you would ever win anything."
The actress was so stunned when she was awarded Best Supporting Actress for her role in "Grey Gardens" that she forgot to mention boyfriend Justin Long in her speech.
"I wish that I could split this award in half," she said after the ceremony. "And I have a great date thank you, Justin, he's been making me laugh all night."