Lady Gaga will perform at the inaugural ball for President Barack Obama next week, according to reports.
A source has leaked the information about Lady Gaga's performance to The Associated press, and has confirmed that the popular singer will perform on Tuesday at the special event for White House staff.
The information had been kept secret and AP has said the source spoke under condition of absolute anonymity as they were not authorized to publicly reveal the information about her appearance.
The White House staff ball to celebrate the president's inauguration is usually a very private affair. When Obama was previously inaugurated Jay-Z famously performed for staff at the private event.
The news comes just days after Lady Gaga was caught in a celebrity spat with Sharon Osbourne. In that incident Osbourne labeled Lady Gaga a bully for her reaction to news that her daughter was being harassed and told to kill herself by Gaga fans.
Osbourne wrote to Gaga on Facebook: "By your actions to Kelly right now, you have shown me that you are nothing more than a publicly seeking hypocrite and an attention seeker."
She added, "I am calling you a bully because you have 32 million followers hanging on your every word and you are criticizing Kelly in your open letter. Are you so desperate that you needed to make this public?"
The controversy started when Sharon's daughter, Kelly, was asked to comment on Lady Gaga's weight gain on a British TV show on Channel 4's Alan Carr program. Showing a photo of Gaga wearing a burka, Carr asked Kelly to comment.
Kelly responded by saying, "I think she is pregnant because she has been covering up this part of her body recently and I have been noticing that a lot. And her style has changed and you can't bleach your hair blonde when you are pregnant."
Her comments led to dozens of Gaga fans to post abusive messages to Kelly Osbourne, some even sending death threats.
The attack from Gaga's fans continued, and led Kelly's mom, Sharon Osbourne, to seek out Gaga's manager, Vince Herbert.
According to Radar Online, Sharon tried to contact him last year but received no response. However, she again sent another email recently reminding him that Gaga's fans were still bullying her daughter. In that email she added a tweet from a Gaga fan telling Kelly Osbourne to "kill herself."
Sharon efficiently points out in the email that Gaga was a "campaigner against bullying."
The email read: "Vince, I'm leaving it in your hands to do the right thing here. One tweet from Gaga can change this whole situation. I'm not asking her to deal with this directly but she if she could tweet something to her fans about being more respectful that may end this. I'm sure she doesn't condone her fans saying such hideously offensive things," according to Radar.
A while later, Lady Gaga penned an open letter on her website "LittleMonsters.com."
She wrote: "As the head of the Born This Way foundation with my mother Cynthia we would like to respond."
However, she then goes on to criticize Kelly Osbourne for her "less compassionate path," slamming her work on E!'s show "Fashion Police."
Gaga said that her work on the show was "rooted in criticism, judgment, and rating people's beauty against one another. Your show breeds negativity, and over the years has even become comedic in nature. It glorifies you and Joan Rivers pointing in the camera, laughing, and making jokes about artists and celebrities as if we are zoo animals."
She added, "To see you blossoming into a beautiful slender woman who makes fun of others for a living is astounding. Why not help others? Why not defend others who are bullied for their image and share your story?"
Gaga also states, "I cannot control my fans, and I discourage them from any negativity and violence."
She added, "I do feel badly that your feelings were hurt."
However, Sharon Osbourne has reacted angrily to Gaga's response, writing on her social media page: "I am perplexed as to why you would go public with an open letter."
She added, "How sweet that you have empathy for my daughter, as you feel that she has taken a less passionate path in life."
She then slams Gaga: "When I see you wearing fur, and using it as a fashion statement, the fact that defenseless animals have been killed so you can get your picture in the press is abhorrent to me. Shouldn't you be teaching your 'little monster fans to respect animals and life?"
She added, "By your actions to Kelly right now, you have shown me that you are nothing more than a publicly seeking hypocrite and an attention seeker. You know it would have been much more dignified of you to do this privately. I am calling you a bully because you have 32 million followers hanging on your every word and you are criticizing Kelly in your open letter. Are you so desperate that you needed to make this public?"
Sharon concluded by stating: "In closing, stop wearing fur, stop looking for publicity, and stop using your fans to belittle not just Kelly but an endless stream of celebrities. A word from you would stop all the hideous, negative and vile threats from your "little monsters." Let me know if you want to continue this debate. I'm an open playing field for you my darling. Sincerely, Sharon Osbourne."