October 17, 2011 01:00 PM

Sara De Boer/Startraks

Barely there bump!

Robert Downey Jr.’s wife Susan hid her growing belly under layers of shiny satin Saturday night at the American Cinematheque tribute, held at the Beverly Hilton Hotel.

The film producer, 37, laid down the law to her actor husband, Downey joked.

The couple know the sex of the baby, due in February, and have also picked out a name, but “I am under strict orders to discuss neither,” the actor, 46, told E! Online.

Downey is already dad to son Indio, 18.

RELATED: Robert Downey Jr. and Wife Expecting a Baby

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