Sandra Bullock Parties with a ‘Closet Master Baker’

Sandra Bullock partied this week with her sister Gesine Bullock-Prado to celebrate the release of Gesine's new book, Confections of a Closet Master Baker, and ET was there for all the flour-filled fun!

"She's finally made something of herself," jokes Sandra about her sister's success to our own Lawrence Zarian. "[I'm] incredibly proud. … I was prepared to tell her it sucked in the nicest way I could, and I was bawling and laughing the entire time I read it."

The party was held at Sandra's gourmet delicatessen/bakery and café in Austin, TX, Walton's Fancy & Staple. So, who was more of a troublemaker growing up in the Bullock clan?