Monster-In-Law (2005)

Charlotte "Charlie" Cantilini is a professional dog walker who has a hard time finding any good men to date, with her social life mostly composed of continually disastrous blind dates. Her dreams seem to come true, however, when she meets Kevin, the perfect guy, until she meets his mother, who thinks no girl is good enough for Kevin and especially not Charlie. With her mother-in-law trying to sabotage the relationship, can Charlie's dream of a perfect wedding and marriage ever happen?

Official website: http://www.monsterinlaw.com/