Credit: Roger L. Wollenberg/ABACAUSA; Courtesy of Coca Cola; Jeffrey Mayer/WireImage; Courtesy of Amazon; Wenn

1. Michelle and Malia Obama bust a move to Justin Bieber's "Baby." []

2. Diet Coke gets a chic makeover from Karl Lagerfeld. []

3. Lauren Conrad's big hair secret? Her long locks are extensions! []

4. Makeup artist Carmindy shows us how to get beautiful in her new book. []

5. Ugly Betty crosses the pond for an episode in London. []

6. Watch the Glee cast sing "Don't Stop Believin'" at the White House. []