Parties! The style, stars and scoop from Hollywood's hottest events

After announcing their engagement just last week, Pete Wentz and Ashlee Simpson had more good news for friends, family and fans: Simpson is about to join the ranks of Hollywood's hottest moms. The singer, who posed with her husband-to-be at the Ritz Carlton hotel in New York City, is pregnant with the couple's first child.

—With reporting by Bennett Marcus and Nakisha Williams