Robert Downey Jr. Baby Talk: We Know the Sex, We've Picked Out a Name

Plus, the Iron Man star is talking sh*t at the American Cinematheque tribute

Robert Downey Jr. has a secret—well, two secrets.

While we already know that his wife Susan is pregnant with their first baby...

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The couple is keeping a lid on the gender of the baby and the name they've picked out.

"I am under strict orders to discuss neither," the Iron Man star told me last night at the American Cinematheque tribute at the Beverly Hilton Hotel (see some pics at my WhoSay page!). "But you got the cats' names."

Yes, cats!

They recently adopted two cats. "We sort of rescued them from a bush in West Hollywood that a friend of ours found," said Susan, who is reportedly due early next year.

"Their names are Montgomery and Dartanian," Downey said.

"Or," his wife added, "Monty and Dart."

Now back to the baby. Downey insisted he will be changing diapers. "That's just poop," he told E! News. "That's no big deal."

Downey already has an 18-year-old son, Indio, from his marriage to Deborah Falconer.