The video shoot took place after the ladies' recent reunion special, reported Ace Showbiz.
Contestants Lisa Vanderpump, Kyle Richards, Kim Richards, Yolanda Foster and Carlton Gebbia are all going to be featured in the clip.
Gaga, 27, recently admitted that she is a fan of the TV show.
The 'Poker Face' hitmaker is currently promoting her latest album ARTPOP. She will embark on a tour later this year to support the record.