Don't Miss:

New daddy (and RocNation founder) Jay-Z couldn’t make the party, but he still managed to draw a slew of supporters to his label’s annual pre-Grammy brunch at Hollywood’s Soho House, where guests like Corinne Bailey Rae and Katy Perry got a chance to relax before the big night. “I woke up with my hair like this,” said Rihanna (in Bottega Veneta) of her laid-back look. “I only wanted something on my lips and to put on a suit.” See more stars who made the most of the music industry’s biggest weekend in the gallery now.

— Bronwyn Barnes, with reporting by Lindzi Scharf and Andrea Simpson

1. After debuting “Part of Me” at the Grammys, Katy Perry released the lyric video for her new power anthem. [Idolator]

2. Betsey Johnson is collaborating with OPI for a new (and surely very pink!) nail polish collection. [Racked]

3. Michelle Obama wore a Jason Wu for Target dress on tour for her Let’s Move! campaign. [The Cut]

4. Madonna picked out her new Material Girls—and none of them are models! [People StyleWatch]

5. Olympian Blue ousts Tangerine Tango out of the top color spot of 2012. [MarketWatch]

6. Socialite Olivia Palermo will be the face of the new Rochas perfume. [WWD]

After the last trophy was handed out at the Staples Center, Fergie, Lana Del Rey, John Legend and more of the industry’s hottest stars made a beeline to the famed Chateau Marmont Hotel for a post-Grammy bash hosted by the Warner Music Group and InStyle. “This party is so crowded!” declared Blake Shelton (in Ermenegildo Zegna), who made the rounds with wife Miranda Lambert (in Atelier Pavoni). After stopping by the Champagne Bar for a glass of Beau Joie bubbly, guests rocked out to a performance by Bruno Mars. Luckily for late arrivals like Paul McCartney, the dance floor stayed open well into the early hours of the morning. See more party photos in the gallery!

— Bronwyn Barnes, with reporting by Lindzi Scharf