Could Catherine, Duchess of Cambridge be sending the world a message with her wardrobe? If you flip back through the catalog of her maternity style choices so far, you might note that she has steered away from the pale pink Wickstead frock she wore nearly a year ago, focusing on more masculine hues like blue, green, and gray. Yesterday was the biggest clue, when she stopped by a reception at the London Portrait Gallery to celebrate The Art Room charity in a pastel blue Emilia Wickstead dress. Could the color of her frock be a subliminal message on the gender of her forthcoming child? You never know! Click the photo to see more of her maternity looks.