The 5ft 11in South African told close friends that she decided to split from the Irish actor following a Christmas trip to Mexico and has since stopped wearing the antique commitment ring that Townsend gave her as a symbol of their relationship.

The singer, 24, at the Big Day Out Festival in Australia collapsed on the ground after performng to thousands of fans on the hot summer day. With her make up smudged and messy hair dripping with sweat, the singer wobbled across the tarmac before stumbling on the floor.

The When in Rome star, 29, is engaged to Dax Shepard, 35, her rep confirms. A source says Shepard proposed over the holidays. Bell debuted her ring on the red carpet of the Grammys.

Avatar ventured further into rarefied territory at the worldwide box office during the weekend, surpassing the $2 billion mark days after it broke the record held by Titanic.

James Cameron's 3-D sci-fi spectacular has grossed $2.039 billion after seven chart-topping weekends of release, distributor 20th Century Fox said.

The News Corp.-owned studio declined to forecast where the film would end up, since it expected Tuesday morning's Oscar nominations to spur a new wave of interest.

Amidst continuing reports of other singers being approached to front Aerosmith, Steven Tyler and his handlers are taking steps to reassert his position in the band (which may include legal action).

Tyler's Los Angeles-based attorney, fired off a letter to Aerosmith manager Howard Kaufman last week, requesting that Aerosmith's management "immediately cease and desist from engaging in acts and conduct to the harm and detriment of your own client, Aerosmith, and our client who is one of its members."

Miller subsequently said on behalf of Tyler he's called a meeting of Aerosmith's "shareholders" on Feb. 9 to discuss the band's future, including recording a new album and touring this year of Europe and South America. The four-page letter also states that "we reserve all of our legal rights and remedies in this matter, including, without limitation, pursuing legal action for damages and other appropriate relief."

Taylor Swift, 20, became the youngest artist to win the coveted Grammy for album of the year. Beyonce, 28, beat her in the song of the year race with her anthemic hit Single Ladies (Put a Ring On It).

Swift won a total of four Grammys, and Beyonce won six. Both were overshadowed for record of the year by surprise winners Kings of Leon with their pop-radio hit Use Somebody... via