Actress Mae Whitman had to dress down for this year’s big Harry Potter premiere in London, so as not to upstage pal Emma Watson.

The Potter-obsessed Parenthood star was invited to the Trafalgar Square premiere by Watson, who befriended her on the set of new film The Perks of Being a Wallflower – and Whitman admits she desperately wanted to dress up for the big bash.

She says, “I stayed at my friend Emma’s house while I was filming in London… and I got to go to the premiere of Harry Potter and the Deathly Hallows Part 2. I’m the biggest, nerdiest Harry Potter fan ever. It took every last ounce of strength I had to not dress up; I didn’t want to embarrass Emma.” »