Beyoncé Knowles checked out a fierce pair of orange heels with her mom, Tina, at a department store in London yesterday. The superstar singer took a break from her crazy schedule for a quick shopping trip, though she's been on the go since her album 4 came out late last month. Beyoncé performed at Saturday's T in the Park festival in Scotland after making the rounds at Glastonbury, on GMA, and in NYC on July 4 to name a few. While she's traveling the world, we also got a peek at her sexy side with the hot "Best Thing I Never Had" video. Beyoncé joined the ranks of music video brides, which already includes the likes of Madonna, Gwen Stefani, Britney Spears, and more.