Emma Bunton threw a "tantrum" in a nightclub because they wouldn't let her smoke.

The former Spice Girls singer - nicknamed Baby Spice because she was so sweet and innocent - shocked onlookers when she reportedly screamed at staff at London's Mahiki nightclub because they wouldn't let her breach their smoking ban in the early hours of Thursday morning (25.06.09).

A source at the club - which is a favourite of Princes Harry and William - told the mailonline website: "Emma came in with a pal and seemed to be in good spirits. No one knew she was coming and staff managed to find a table for her.

"After a while she asked a member of staff if she could smoke a cigarette but was told that she wasn't allowed."

The 33-year-old star - who has a 22-month-old son Beau with her partner Jade Jones - was outraged, and demanded to speak to a senior member of staff.

The source added: "The manager came over and politely told her that the club has a no smoking policy. He was overheard saying that they don't even do it for the princes. Emma is usually so mild-mannered, so those who heard what was going on were quite shocked."

Emma and her friend finished their drinks and left immediately, spending the rest of their evening at the nearby Maddox nightclub.