It's the moment royal watchers have been waiting for - the first photos of Kate Middleton's baby bump! Kate and Prince William's first child is due in July.

The Duchess of Cambridge showed off her expanding tummy at London House Hope on Monday.  She looked lovely in a gray Max Mara wrap dress and black pumps.

It was Kate's first official public apperance of the year. She spoke for Action on Addiction, a charity that supports women battling substance abuse problems.

The duchess recently made headlines after Italian magazine Chi published photos of her vacationing in a bikini, revealing her pregnant belly. The same magazine posted topless photos of the Duchess last year.

See more photos of the Duchess...