Megan Mullally (born November 12, 1958) is an American stage and screen actress and singer who is best known for her television role as Karen Walker on the NBC sitcom Will & Grace from 1998 to 2006. She voiced Adele in the 2004 Disney animated film Teacher's Pet, Mrs. Marilyn Driscoll in Randy Cunningham: 9th Grade Ninja and Miss Nettle in the Sofia the First episode "Make Way for Miss Nettle". She also appeared in the 2014 Disney fantasy-comedy film Alexander and the Terrible, Horrible, No Good, Very Bad Day as Nina and the ABC TV show In the Motherhood as Rosemary.