When you buy Lady Gaga's next album, think about this: She recorded it buck naked. She's been doing her vocals in the studio "completely starkers," a wonderfully British source tells the Sun, because "she thinks it makes her voice sound better." She's also been tweeting pictures of herself sans clothing, the paper notes. And she's not the only one with modesty issues: The New York Post reports that Simon Cowell had to admonish Britney Spears after she showed up to her X Factor judging gig apparently sans bra. "It was made clear she is expected to be impeccably dressed and made-up for the show," a source says. "And none of those ragged hair extensions."