Kate Middleton shows off baby bump in a MaxMara dress in London

Thirty one year old, Duchess of Cambridge, Kate Middleton, kept her head high, after a recent criticism by Booker Prize winning author Hilary Mantel, calling her 'a plastic princess designed to breed, and debuted her growing baby bump as she made an official appearance at London's Hope House. The Duchess looked elegant and graceful as she kept her tiny but visible bump under wraps in a grey MaxMara wrap dress, that is sadly not in stores as it is from a 2011 collection. Kate also had a slight tan, and wore pearl drop earrings, a necklace, and her engagement ring with her attire. Black pumps and a natural makeup face completed the look for the mother-to-be.