{blackbabes} Beyonce: 'I definitely want to have more kids'

Beyonce says that she and husband Jay-Z are not done having children.

"I definitely want to have more," she told "Entertainment Tonight" last night at the Met Costume Institute Gala. "I don't know how many. God knows -- I don't know yet."

She said, however, that fans shouldn't be on baby bump watch just yet.

"I don't know about soon," she said, laughing. "But someday."

Beyonce reveals that being a mom to 4-month-old Blue Ivy Carter has given her a new sense of purpose, in addition to making music.

"I have such a full life," Beyonce says. "I feel like now I know the reason that I was born."

Beyonce stunned at last night's gala in a sheer Givenchy Haute Couture gown with strategically placed rhinestones covering her bits. The revealing dress showed that the star is back to her pre-pregnancy body just months after giving birth.

"I've been working so hard. There are no secrets, just discipline," says Beyonce, who is set to play three concerts over Memorial Day Weekend in Atlantic City. "I haven't had much time in the gym. [But] I've been rehearsing. I have a show coming up and it's my first show in a year."