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Charlie Sheen and his ex-wife Brooke Mueller put aside their differences over the weekend to co-host a birthday party for their twin sons.

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The "Anger Management" star and Mueller, who have been fighting for custody of Bob and Max for months, celebrated the boys' fifth birthdays at the actor's home on Saturday. But it was all one big happy family on Saturday as Sheen's exes partied with all his kids and new fiancee Brett Rossi. To see a photo from the party, click here.

Denise Richards took over guardianship of Bob and Max last year when the boys' mother checked into rehab for substance abuse issues, but she had to relinquish her role months later, claiming the brothers were too unruly. She even suggested they needed counseling before handing temporary guardianship to their uncle, Mueller's brother.

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