Pop star Lance Bass and his fiance Michael Turchin celebrated their upcoming wedding with a joint Mardi Gras-themed bachelor party on Tuesday (09Dec14).

The former 'N Sync singer will reportedly wed Turchin on 20 December (14), and their pals threw a surprise party for the couple at gay nightclub The Abbey in West Hollywood.

The bash had a Mardi Gras theme as a nod to their engagement in New Orleans, Louisiana earlier this year (14)

Guests enjoyed cocktails and a giant red velvet cake while playing a saucy version of Pin The Tail on The Donkey and watching strippers put on a show.

According to Usmagazine.com, Bass told partygoers he was "truly shocked and it was only the second time in his life he had been surprised".

His former bandmate Joey Fatone, Backstreet Boys star AJ MCLean, and singers Alan Thicke and Ryan Cabrera aldo reportedly attended the bash.