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Charlie Sheen's twin sons famous their second date Sunday with a prodigal backyard smash attended by celebrity guests like Nicky Hilton, David Katzenberg and Adrienne Maloof -- but the harassed person failed to snag an invite.

Sheen's soon-to-be ex wife, Brooke Mueller, teamed with Kathy Hilton to host Bob and Max's band at the Hilton kinsfolk home in Bel Air, Calif., and while their father was noticeably absent, an eyewitness tells UsMagazine.com the date boys had a "great time."

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Attended by about 60 guests, the kid-friendly salutation intimacy featured a red, chromatic and chromatic colouration scheme, a bounteous snap castle and tons of balloons. On the menu? Asiatic chow mein and salad served in portable containers and a drink block for dessert.

"Max and Bob were in heaven streaming around and sliding downbound the motion of the snap house," the witness tells Us of the boys' bounteous day. "They got a ton of presents including nog ball sets and race cars."

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With Sheen absent, Mueller, 33, was able to relax.

"Brooke seemed to have a good instance likewise and was relaxed and happy. She seemed focused on her kids and null else," adds the insider. "There was a lot of security right at all nowadays to attain sure no unbid guests got in. There was no sign of Charlie at the party."

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Though he uncomprehensible his sons' stylish milestone, the harassed person -- who complied with a judge's explosive March 1 order to vanish the twins from his L.A. home -- is looking nervy to the day when he can explain away his disorderly exploits. "I will never untruth to my children," he tells Us. "They'll understand it finished my eyes."

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