<Li> Christopher Masterson as Scotty O'Neal , youngest son of Joe and younger brother of Michael and future brother - in - law of Kimmy . He serves as his brother 's best man at his wedding . </Li>
<Li> Christopher Masterson as Scotty O'Neal , youngest son of Joe and younger brother of Michael and future brother - in - law of Kimmy . He serves as his brother 's best man at his wedding . </Li>
who plays the best man in my best friend 's wedding
who plays the best man in my best friend 's wedding
Christopher Masterson
Christopher Masterson