Expectant parents Fergie and Josh Duhamel spent St. Patrick's Day at their local church in LA. While neither star was wearing green, they did both sport matching blue and black ensembles. However, just because they didn't wear emerald doesn't mean that the couple didn't get in on the Irish fun. Josh tweeted St. Paddy's Day wishes to his fans, including a snap of himself covered in green slime from a Kid's Choice Awards commercial. Fergie had some excitement of her own yesterday when her fashion diary with The New York Times was published in its Style section. In the article, Fergie revealed her maternity style secrets. She said, "Being four months pregnant, I need to be comfortable, but I don't want to be frumpy."