Madonna had her phone confiscated at Jennifer Lopez's 40th birthday party. The singer and other celebrity guests, including Rihanna, Beyonce Knowles, Alicia Keys and Mary J Blige, were forced to hand over their mobile phones and any cameras before they were allowed into New York's Hotel Griffou to celebrate with Jennifer last Friday.

The strict rules angered some partygoers, but Madonna and Rihanna reportedly used the increased privacy to dance "exuberantly" to Rob Base and DJ EZ's hit "It Takes Two."