Boy vey! Superhot boy group 'N Sync broke from their sellout American tour to sing at a private bat mitzvah party. Rachel Colburn couldn't believe her eyes when her favorite group pranced out at her bat mitzvah and did a rousing 40-minute show. The 12-year-old guest of honor squealed in delight as the hunky pop stars sang their biggest hits, including "Bye Bye Bye" and "Tearin' Up My Heart." The group signed autographs and planted kisses on the cheeks of gushing girl fans before making a fast getaway from the Beth Sholom Congregation in Potomac, MD, last Sunday. Rachel's dad, AOL honcho David Colburn, used his connections to hire the hotshot hitmakers — while trying to keep his big coup a Pentagon-like secret. — New York Post