Veteran pop star Donny Osmond and his sister Marie are set to extend their Las Vegas residency until the end of next year (15).

The singing siblings entered a six-week contract in 2008 to perform at the Flamingo Hotel and Casino in Sin City and the response to the shows was so overwhelming that they have continued the residency for six years.

Bosses at Caesars Entertainment Corporation announced on Monday (22Dec14) that the duo had signed on to perform dates in every month of 2015 except March, July, August, and December.