gaga, britney, rihanna, katy and it will be on the top of the charts for 10 years until they release a collab album where it will be 12 tracks long and it will replace the top 12 of the BB Hot 100 for 2 years.
This takes the cake for the most posted thread on any pop forum. I think they should do it with Rita Ora only TBH She's the only one i can see doing it maybe have Regina Spektor do the back ground vocals