The stars tried to keep a straight face as they versed lady luck in a charity poker tournament on Saturday.

The host, Camryn Manheim, personally invited ET to the event. She attracted quite a full house, with entrants such as Jennifer Love Hewitt, with boyfriend Jamie Kennedy by her side, Joely Fisher, Cheryl Hines, and Jennie Garth.

Despite rumors that they had broken up, Jennifer and Jamie told ET that they are still all in the game of love. As he embraced his girlfriend, Jamie said, "We're very happy. Yes, we're a couple and things sometimes are up and down."

Jennifer also negated rumors that they had gotten engaged, saying, "Sometimes you don't always have to be married to be happy."

Camryn's eight-year-old son, Milo, will be joining Jennifer on-screen in "Ghost Whisperer." The show was looking to cast a young boy who knows some hat tricks. She said, "My son is pretty good at magic. He's been taking magic for a couple of years."

Joely talked about whether she would put her kids in front of the camera. She joked, "My kids are in a reality show. My life is a reality show." Cameras recently followed her family for a day-in-the life piece.

So, what are her thoughts on the Heene family creating the "Balloon Boy" furor in the quest for reality show fame? She said, "I think that it's sort of a sad commentary…what we're doing to get attention and using our offspring as part of that, so I have to say it's a bit disgusting."

The celebs upped their ante to raise funds for the Children's Institute, which "finds children who are in abusive and violent situations and really comes to their rescue and they try to mend their broken hearts and spirits," Camryn explained to ET.