The war between Lady Gaga and Madonna has hit rock bottom.
Following the Queen of Pop's repeated rear-flashing on her MDNA tour, Gaga exposed her own g-stringed derriere to 13,000 people at her Born This Way Ball in Helsinki, Finland.
Telling the crowd, "I don't give a f--- what people say. We don't give a f--- what people say, we know the truth" (referencing a lyric from her album track 'Bad Kids'), Gaga launched into a cover of Madonna's 'Like a Prayer'.
Was it a veiled response to Madge performing a mash-up of 'Born This Way' and 'Express Yourself' at her own concerts (see video below)? That's certainly what the verdict on various international entertainment sites has been.
Daily Mail points out that Gaga's "I don't give a f---" comment is "clearly a reference to Madonna's song, 'I Don't Give A'" from her MDNA album. Well of course!
Gaga still hasn't come out swinging at Madonna since the 54-year-old singer slagged off Gaga's 'Born This Way' in January, calling it "reductive".
To which Gaga politely responded, "If the queen says it shall be, then it shall be".
Madge took another stab at her pop rival in July, saying "I'm a really big fan of 'Born This Way'. I'm glad that I helped Gaga write it". Ouch.
Bring on a game of thrones between these bum-flaunting foes!