Pop star Lance Bass is still upset his friend Kristin Chenoweth had to axe her planned performance at his wedding to care for her sick dog.

The 'N Sync star was hoping his former bandmate Jc Chasez and stage and screen star Chenoweth would take the stage at his nuptials in December (14), and sing a special duet of Elvis Presley's Can't Help Falling In Love for him and his new husband Michael Turchin.

Chasez made it to the big day but Chenoweth had to pull out days before the wedding, much to Bass' dismay.

He tells U.S. chat show Watch What Happens Live, "Two days before (the wedding), Kristin Chenoweth had to back out, because she was going to do the duet with Jc, but unfortunately she had to stay in New York because her dog got really sick."

Chenoweth wasn't the only notable name to miss Bass' big day - Justin Timberlake was the only member of 'N Sync who was unable to attend the nuptials as he was on the road completing his The 20/20 Experience world tour dates.