Spears is all suited up at the last rehearsal before her Vegas show opening. Plus: Joe Manganiello, Kim & Kanye & more!
Published: Friday Dec 27, 2013 | 07:00 PM EST
More from PEOPLE
- Comic-Con Has Started – and Fans Are Going All Out with Their Costumes
- Read the Cover Story: JFK Jr.: The John We Loved
- 7 Times Jennifer Lopez & Her Rock-Hard Abs Made Us Forget She's 47
- We Performed Circus Acts with Ringling Bros. and Barnum & Bailey