According to sites like Wikipedia, she is 29. Last year, she made Forbe's Best Paid Celebrities Under 30, and recently she said in USMagazine, "I always said I would have a baby at 30,". I always thought she looked good for her age, assuming she was already in her 30s, but now finding out she's only 29, gurl.
She hasn't said or done anything that leads me to believe she isn't 29 so yes. Do you believe she is 29 because that's who this thread seems like it was really made for?