aguileraintervention230.jpgChristina Aguilera's friends and staff are apparently so worried about her out-of-control drinking that they want to sit her down and convince her to seek treatment at a rehab facility, according to a report.

"Christina's drinking has some of her friends worried," a source tells In Touch. "She seems to be getting out of control, and her friends want her to get PROFESSIONAL help. The past few weeks, her partying has escalated," the source revealed. "If she is drinking until she passes out, that's NOT good."

Christina reportedly passed out in Jeremy Renner's bed during the actor's 40th birthday party on January 8th.

Her staff is similarly concerned and wants to stage an intervention.

"They wanted to talk to her carefully about the issue, but they're not going to because they are scared after she threatened to fire them," another source tells the NY Post.

And apparently, they've got good reason to worry. Christina apparently fired her house manager, assistant and publicity team in a fit after an unflattering photo spread of her then-baby Max was published in 2008.

Yet, "her people desperately want this to come out so she will get help."

However, another source says that this is just a rumor being perpetuated by a disgruntled employee and that Christina is just going through a tough time in her life after splitting with husband Jordan Bratman.

Christina apologized for last night's national anthem flub at the Super Bowl, saying "I got so caught up in the moment of the song that I lost my place. I can only hope that everyone could feel my love for this country and that the true spirit of its anthem still came through."