Beyonce Knowles is the cover girl for Vogue's 2009 shape issue, and she took a break from preparing for her upcoming tour to chat with the magazine about the many aspects of her life. She opened up about her marriage to Jay-Z, being a role model and digging deep for her character in her new film Obsessed. Here are highlights:

  • On thanking Michelle Obama for inviting her to sing at Inauguration: "She told me she was very happy that her girls have someone like me to look up to. And I'm like, 'Oh, my God.' You have to feel fortunate to be one of the people whom parents don't mind their children looking up to. The older I get, the more I think about the amount of influence I have on these young girls, and it's scary sometimes. But I also understand how lucky I am to have that."
  • On being a happy person, yet acting mad in Obsessed: "Everyone has it in them. You know what's so great? I have made the choice — because it does take effort — to be happy. I mean, I am happy. But it's hard. Sometimes. . . you don't want to be that way. And holding all of that stuff in, holding the anger in and always being so composed. . . it was so great for me to be able to release everything. Imagine! I always have to be so put together, I always have to be pleasant. But sometimes I want to scream and holler, and I'm able to use the characters to release whatever pain or frustration has built up in me."
  • On what she's learned from Jay-Z: "I definitely have learned to be a little more picky from Jay. Because if something makes a lot of sense to everyone else, if he doesn't feel it, he's like, 'I don't want to talk about it.' Which is great."