By Jen Heger - Breaking Celebrity News Assistant Managing Editor

Charlie Sheen and his second wife, Denise Richards, will be throwing a birthday party for his third wife, Brooke Mueller Sunday night, and it will truly be a family affair as all of their kids will be at the festivities, Breaking Celebrity News is exclusively reporting.

"Charlie and Denise decided to throw Brooke a birthday party in honor of her 35th birthday. Charlie's kids with Denise, Sam and Lola, and his kids with Brooke, twins, Bob and Max, along with Richards' adopted daughter, Eloise will be in attendance," a source close to the situation tells us.

As we previously reported, Mueller recently began dating country musician, Jaron Lowenstein. "Jaron is from Nashville, and Brooke and the boys have been spending a lot of time with him in Tennessee. Brooke and Jaron are basically living together and he is a great influence on Brooke who has had issues over the years with substance abuse. Jaron isn't a party animal, in fact he is the opposite of Charlie Sheen as he doesn't drink or even smoke," the insider previously told us.