Britney Spears confirmed that she would be following in Gaga's footsteps and performing tonight in Las Vegas, in what was supposed to be a secret show!

This morning Brit tweeted:

Looks like my little secret isnt a secret anymore. Whos coming to watch me take the stage TONIGHT at @RainLasVegas at @PalmsLasVegas? -Brit

Earlier this week we reported that Britney was set to secretly take the stage at Palms Casino Resort in her first performance to support her upcoming album Femme Fatale, which drops next week. And now she's no longer hiding it!

Britney has encouraged everyone to come to the show, which is being shot for an MTV special, tweeting, "You're all invited. Be there or be square b*tch! -Britney"

See what else Brit revealed ... after the jump!

Lindsay Lohan is joining the ranks of Madonna, Cher, Rihanna and other celebs who only go by one moniker -- The actress is planning on dropping "Lohan" from her name and will only be known as Lindsay from now on, according to her mother, Dina Lohan.

"Lindsay is dropping the Lohan and just going by Lindsay," Dina told Popeater. "Plus, me and Ali will be officially changing our last names back to my maiden name, Sullivan."

A source says, "No one in the family want anything to do with Lindsay's father anymore and that includes sharing a last name."

After her parents' divorce, Lindsay had a strained relationship with her father, Michael, but recently mended things following her latest stint in rehab (where Michael often visited her.) But now that Michael's been formally charged with domestic violence and new details about the fight he had with ex Kate Major are emerging (including a disturbing account of how Michael allegedly sliced his wrists and threatened to blame Major for the injuries), Lindsay apparently wants nothing to do with him.

But would dropping the Lohan from her name really give her the fresh start she needs? If Lindsay is convicted for felony theft of a $2,500 necklace by a jury when she goes back to court next month, it may not be enough to change her ailing reputation.

Kirstie Alley cannot stop dissing George Lopez on Twitter after he made a bad joke comparing her to a pig after her stunning performance Monday on Dancing With the Stars.

"Before the show, she went to the market and then she had some roast beef and this is her going all the way home," Lopez joked on his show.

Kirstie fired back, tweeting, "Don't worry about George's comments…just remember what happens to the big bad, drunk woolf…falls in a boiling pot of vodka.Piggy laughs."

But the feud didn't stop there. Lopez apologized, saying:

I misjudged the joke. No malice was intended and I apologize to Kirstie.

Kirstie's response?

@georgelopez I don't need or want ur apology…I want your kidney dude..on behalf of ur X and all the women uv insulted…give it back

Lopez' wife helped save his live in 2005 after she donated a kidney to him. Lopez filed for divorce last year.

But Kirstie hasn't stopped there. She still couldn't let it go this morning, tweeting:

I don't consider "I misjudged the joke" an apology. sorta like a husband saying"I misjudged putting my d*ck in a whore" ...sorry hon..hehe

Kirstie scored the second highest numbers of the night on DWTS when she did a sexy cha-cha with partner Maksim Chmerkovskiy. She performs again this coming Monday when she and Chmerkovskiy tackle the foxtrot.

Check out our EXCLUSIVE VIDEO below from this morning to see what Kirstie says about whether or not she's forgiven George!

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Katy Perry has moved on from lollipops and candy ... to something a little more out of this world!

These new images give us a look at Ms. Perry's extra-terrestrial look for her upcoming "E.T." video ... purple lips and blue contact lenses included. Too bad the Star Wars trilogy is complete because Russell Brand's wifey would have made a great addition in this outfit!

In addition to posting these photos, Perry wrote on her Facebook page, “Global abduction begins!”

The video for "E.T." will also feature Kanye West. Can't wait to see the finished product next week!

See another close-up of Katy's alien-like makeup ... after the jump.

Ex-spouses Demi Moore and Bruce Willis put up a united front at daughter Rumer's Broadway premiere for Love, Loss and What I Wore Thursday night in New York.

Moore and Willis have always had the most amicable of Hollywood divorces, and last night looked no different as the proud parents supported their actress daughter's latest endeavor.

Wearing tight black leather leggings, Bruce's wife, former British model Emma Hemming, 33, actually upstaged Demi, who wore a high-necked black dress for the occasion.

As for the men, Willis, 56, was looking as dapper as ever, while Ashton was sporting more hair on his face than Bruce has on his head!

Love, Loss & What I Wore is based on a collection of stories from sisters Nora and Delia Ephron. Rosie O'Donnell, Brooke Shields, Sherri Shepherd, Katrina Bowden, Rita Wilson and Melissa Joan Hart have also appeared in the production.

No wonder Emporio Armani hired actress Megan Fox to be the face and body for their lingerie line ... she's drop dead gorgeous!

In this behind-the-scenes video, we get to see Ms. Fox strutting her beautiful stuff while on location in Mallorca.

The 24-year-old starlet, married to actor Brian Austin Green, has recently come under fire for looking too thin.

Megan's trainer, Harley Pasternak recently said, "She (Megan) gets frustrated at times because she's like 'I need to put on weight.' So she actually weight-trains to keep on that lean muscle tissue."

Whatever she's doing, it's definitely working! See one of the Armani ads that created the "too skinny" controversy ... after the jump.

Penelope Cruz is making the rounds promoting her upcoming film Pirates of the Caribbean: On Stranger Tides, and last night, she wowed the audience at Jimmy Kimmel Live in a sexy black dress.

Looks like the new mom has her pre-baby body back! Javier Bardem is one lucky guy.

While talking to Jimmy, she reveals her co-star Johnny Depp loves fart humor. She tells Kimmel:

"I was doing a very dramatic close-up, and he kept making that sound with the machine… I was just thinking, 'I hope they're not thinking it's me'. When I met him ten years ago, he had a plastic [fart machine], and now, ten years later, he has one with a remote control."

Cruz went on to gush about Depp ... telling the audience:

"I only have good things to say about him... He's really one of the most kind and genuine people that I have ever met. He became a good friend. And he's so funny - I guess people know how funny he is. He has one of the best senses of humor, he's kind and smart. I love working with him."

Sounds like a lovefest!

See video of Penelope on Jimmy Kimmel Live ... after the jump.

Vanessa Hudgens is doing all she can to promote her latest film Sucker Punch due out today. But V, when you're wearing a short and slinky white dress, be careful when you exit your car ... knowing all eyes are on you!

The former High School Musical cutie was all smiles once she hit the red carpet in a Jenny Packham dress at Nylon Magazine's 12th Anniversary party.

Nylon's party, held at Grauman’s Chinese Theatre, was hosted by the gorgeous gals of Sucker Punch.

We'll admit, V Hudge looks gorgeous!