Madonna is taking her daughter Lourdes on her next tour and has invited Justin Bieber to come along for the ride.

The singer extended the invitation to the Canadian pop star when she joined Twitter for the day on Monday as part of a Q&A with fans to promote her new album MDNA.

Justin, who released his new single Boyfriend this week, was among the fans who joined the conversation on the social networking site.

He congratulated Madonna on her twelfth studio album and she wrote, 'Come and join me on stage when I'm on tour when we are in the same city and congrats on your new single.'

The Material Girl singer's account, @MadonnaMDNAday, attracted more than 25,000 followers in just 24 hours.

Meanwhile, the superstar singer has revealed she will be taking her 15-year-old daughter on her summer tour. In a Sirius XM radio interview with Larry Flick, Madonna admitted she has to watch Lourdes carefully following recent photographs which showed the teen lighting up a cigarette.

'I have to keep my eye on her,' she said.

She also praised her daughter's vocals on her track Little Star and says she is a great musician.

'She plays the piano beautifully. She's an incredible singer,' Madonna said. 'But she's going through that 'I-don't-want-anyone-to-notice-me phase.''

Madonna's first LP in four years, MDNA, is out now.