Duff performs her hit single on the Today show summer concert stage. Plus: Britney Spears, Tom Cruise and more
Updated: Friday Jun 29, 2007 | 06:00 AM EDT
More from PEOPLE
- 'Manganiello or Manga-Hell No!' Is Our New Favorite Game (VIDEO)
- The Best Photos from the Week of June 22- June 29, 2015
- This Week Will Be One Second Longer – Because of Science!
- Justin Timberlake Sings at Friends' Wedding as He and Jessica Biel Have Fun Weekend Away
- FROM EW: Comedian and Actor Jack Carter Dies at 93