Madonna's adorable son Rocco Ritchie joined his mom on stage to help her kick off her MDNA world tour in Tel Aviv, Israel, on Thursday. Check out his multiple costumes — including a priest's robe! Plus, Charlize Theron shows off her chic style in London, and we're taking a look at some of the best celeb Twitpics of the week. Let us know on Facebook or Twitter which are your favorites — and why!
Check back weekdays at 12 p.m. PT
- Become a fan of omg! NOW on Facebook
- Click here for Kristen's bargain style fashion
- Follow omg! NOW on Twitter
More Celebrity Features on Yahoo!: