Newlywed Katherine McPhee made an appearance at the World Premiere of Columbia Pictures’, new flick The House Bunnyin which Katherine costars as a pregnant co-ed. We’re interested to see if Kat can pull of comedy, as she seems awfully serious to us. We were a bit surprised when we saw Kat at the Mann Village Theatre. in Westwood, California. It looks like this young American Idol alum has aged quite a bit since we last saw her! Well, they say married people eventually start to look alike, and maybe Kat is just taking on the traits of her MUCH older husband. Aging or not, Katherine was looking radiant in all white as she signed fotos for fans and said hello to our camera. Thanks, Kat, and here’s good luck to your new film!