Entertainment Celebrity Fashion Lines March 8, 2011 / 2:58 PM PST / CBS News Beyonce Knowles Shawn "Jay-Z" Carter Mary-Kate and Ashley Olsen Miley Cyrus Jessica Simpson Sean "Diddy" Combs Hilary Duff Mandy Moore Kimora Lee Simmons Emma Watson Justin Timberlake 50 Cent Alyssa Milano Pharrell Williams Avril Lavigne Lauren Conrad The Kardashians The Kardashians Joan Rivers Rachel Zoe Whitney Port Victoria Beckham Nicole Richie Serena Williams Russell Simmons Sienna Miller Lindsay Lohan Kate Bosworth Madonna