Lady Gaga Versus Madonna — the pop divas feud continues!
After the Material Girl's many digs and jabs,Gaga reportedly fought back at her Finland show just last night. She mimicked Madonna's slight, flashing her bum.
Madonna flashed her deriere during her MDNA concert while singing a mash-up between Express Yourself and Gaga's Born this Way -- the specific Mother Monster song that Madonna claims sounds like her own. And, After performing the mash-up, Madonna even shouted, "She's Not Me." Yikes!