City Girl, Kate Hudson who has been seen all around town for weeks filming her new romantic comedy “Something Borrowed,” also found time to attend last nights annual Costume Institute Gala at The Metropolitan Museum of Art. Kate and her pal Liv both posed with fashion champion Stella McCartney and wore her gorgeous designes. Doubtful if Kate hit any after parties though, because she continued filming bright and early today on the east side. “Something Borrowed,” also starring Ginnifer Goodwin and John Krasinski, is the story of a Manhattan attorney who becomes involved with her best friend’s fiance.