Charlie Sheen's twin boys turned two over the weekend and celebrated with a "lavish" party without their dad, according to Us Weekly.

Sheen's estranged wife Brooke Mueller threw a backyard party this weekend for her sons, Bob and Max, who have been the focus of a nasty and public custody battle.

Co-hosted by family friend Kathy Hilton (Paris Hilton's mom), the party boasted more than 60 guests, including Nicky Hilton, David Katzenberg and 'Real Housewife' Adrienne Maloof.

Balloons and a bounce house had the kids running around and enjoying the afternoon.