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28 March 2012, 08:39
The 'Girl Gone Wild' singer also congratulated the Canadian pop star on his successful new single.
Madonna has invited Justin Bieber to join her on her upcoming world tour.
The 'Give Me All Your Luvin' singer says the 'Never Say Never' star is welcome to join her on stage when they schedules coincide, and also congratulated him on the success of his brand new release 'Boyfriend'.
"@justinbieber Come and join me on stage when I'm on tour when we are in the same city and congrats on your new single," Madonna tweeted to Justin yesterday (27th March).
The 'Girl Gone Wild' singer, who launched her twelfth studio album "MDNA' this week, previously admitted she is a "huge" fan if the Canadian singer-songwriter and thinks he is "awesome".
Justin himself later responded to Madonna's comment when he replied saying hers was a career "others only dream of".
Justin Bieber launched his brand new single 'Boyfriend' in the US on Monday (26th March) and will release it in the UK on 20th May.
Madonna is due to kick off her world tour with a performance in Israel on 29th May.