Playing Greg's mother, Susan Heffley, Rachael Harris is the highest ranking female figure in "Diary of a Wimpy Kid." Rachael Harris is one of the most famous female comedians in…

Rachael Harris has made guest appearances in a ton of TV shows, including "Reno 911" and "The Sarah Silverman Program." She also played Ed Helms' bitchy wife in The Hangover. She's funny, cute, and has a sexy librarian thing going on when she wears glasses. A word from Rachael: "Maybe because I’m an improviser and I was ready for anything that he was going to bring."And she rolls with the punches. What more could you ask for? I'm pretending she's talking about gettin' freaky, and not acting.More sexy librarian pics of Rachael after the jump.