Britney Spears tells Diane Sawyer on ABC ‘Primetime’ the outfits she wears during performances simply reveal how comfortable she is with herself. “I feel comfortable in my skin,” Spears said. “I think it’s an OK thing to express yourself, and be the way you want to be,” Spears said. “I mean, I wouldn’t walk into a club or a party like that. But I think, you know, I think it’s fine. You know what, when I was younger, I used to run around my house, naked, when I was 13, and people, my dad would be like, I was just very like, free.” The Britney ‘Primetime’ special airs at 10 PM ET/PT on Thursday.