Always entertaining,  Lady GaGa was in a wild spirit as she greeted fans by signing autographs in New York City on Thursday evening (January 21).

Sporting a wild yellow hairdo, the “Poker Face” singer growled at the crowd of onlookers, also looking a bit banged up while displaying bruising on her legs and what appeared to be a burn mark on her left arm.

Ready for the second night of a four show stretch at Radio City Music Hall, GaGa tweeted to her fans and followers about the first night’s gig.

She writes, “what a show last night, my little monsters are everything.thinking its time to get a little monster tattoo.thoughts? headed to rehearsal.”

In the midst of her whirlwind, award-laden weekend, Sandra Bullock took time to donate $1 million to Doctors Without Borders’ emergency overseas relief efforts, a charitable organization which offers medical care to those in need.

“I wanted to ensure that my donation would be used immediately to meet the needs of the Haitian people affected by this catastrophic event,” the Golden Globe nominee said in a statement Friday.

Lady Gaga’s Friday visit to The Oprah Winfrey Show was about more than just funny photos. The eccentric songstress addressed the Haitian catastrophe, and made a donation promise of her own.

Gaga pledged to donate all funds from her Jan. 24 concert in New York to aid the grief-stricken nation.

“Haiti’s still suffering. And I will say today that on the 24th, the Monster Ball [show] in New York City, all of the money that I make in ticket sales and merchandise will go to Haiti,” said the star. “And on the 24th you can also go onto LadyGaga.com and any merchandise that you buy, the money will go to Haiti.”

Fellow musician Akon is rallying behind Wyclef Jean’s Yéle Haiti, and the good the former Fugees frontman is doing for his native country.

“I know how much passion and love he has for his country and that’s why he does so much for Haiti in general,” Akon told MTV News. “So that’s why we do whatever we can and assist him in whatever it is, including him and everyone else, they all need help. I think we should put our hands in that same pot and try to find a way to stir that soup [together].”

And Chelsea Clinton is exercising her way into a huge gift for Haiti. The former First Daughter is co-hosting a 90-minute spin class in New York City, where participants will pay to join the “ride.” Bikes will sell for $1000, $500, and $100, based on row location, and one-hundred percent of proceeds will be donated to relief efforts in Haiti.

Meanwhile, illusionist David Blaine on Friday kicked off a 72-hour “magic marathon” in Times Square to collect proceeds for victims.

And the rest of Hollywood (and most television networks, including E!) will join George Clooney’s telethon next Friday to aid the earthquake-ravaged country.

Tiger Woods

T-Dubya has been shacking up at the Trump Hotel at 1 Central Park West, sources confirm to the A.T. So has his wife, Elin, joined him?

Yeah right. The paps have been staking out the hotel like it’s their job. Oh wait…

Sources inside the luxury towers tell us the missus hasn’t come a knockin’, and if we were Woods, we wouldn’t be expecting her anytime soon, either. Not without her big-gun attorneys, that’s fer sure.

T.W. has been doing his best to keep a very low profile there, which for him, means going back and forth between hitting the bar and barricading himself in his room. Supposedly, Woods has been boozing and fraternizing with some females there. Hardly the actions of a dude trying to woo his wife back.

More outwardly femme-centric back in Miami was…

Lady Gaga, hitting South Beach for a night on the town, turning up at Lincoln Road’s notorious boys-only bar Score on Saturday night.

After performing a concert in downtown Miami (third show in about 24 hours), Gaga kept the party going with a little impromptu serenade for her gayest monsters, singing a bit of “Bad Romance” at the club.

Way to stay true to the audience who made you, doll!

Lurking elsewhere in the sultry sandy area…

Jared Leto, biking on a retro-looking bicycle, New Year’s Day, going south on Ocean Drive, wearing a sexy, white V-neck tee and some cool Ray-Bans. The white V? Perfect for getting caught in the rain, which he without a doubt did.

And then, down the road, also in South Beach…

Kelly Rowland, frequenting the posh Brownes Salon with her mom and sister over the holidays.

Beyoncé’s former bandmate was “nice as can be” as she and her family enjoyed some manicures and pedicures.

We’re told Kel looked gorgeous, as usual, as she rocked her South Beach au naturel look.

Anyone else miss Destiny’s Child?

Always entertaining,  Lady GaGa performed poolside at the Fontainbleau Hotel in Miami Beach on New Years Eve (December 31).

Happening to be the top draw for this year’s New Year’s parties, the “Poker Face” singer didn’t disappoint as she churned out the hits for the jam-packed audience.

After finishing her set, GaGa strolled off the stage with blood on her neck – greeting friends and fans jockeying for position to get close to the 23-year-old singer.

Tweeting to her fans during the course of the evening, GaGa wrote, “Two shows, about 13 outfits, 15,000 little monsters, and sticky champagne, and I don’t care if its miami I’m still wearing leather.”

Rihanna reportedly said of Gaga, “Lady Gaga has a very bold, fearless image and, I have to say, I have so much respect for original artists who aren’t afraid to do what they do. That’s what I respect the most. She’s awesome.”

With the release of her latest album, Rated R, Rihanna has been uncharacteristically forthcoming about her whirlwind year. She also told a reporter (via BangShowbiz) that she thinks the abuse she suffered at the hands of Chris Brown was ultimately humanizing: “Before, young girls thought my life was perfect. Now they realize it’s not. Nobody’s perfect. I’m living the same human life that they are, just with a more public career.”

Helmed by famed photographer Ella Pellegrini, the new photos show the “Just Dance” diva clad in a white cropped leather jacket with zipper accents, white hotpants, and fishnet stockings complete with lace-up heels.

In related news, it seems GaGa’s tour is getting a new opening act as Kid Cudi has bowed out after only a month on the road.

Cudi released a statement saying, “Kid Cudi has decided to take an early leave of absence from Lady Gaga’s Monster Ball tour, in order to balance his schedule surrounding the recording of his next album and acting commitments.  Cudi does not want to disappoint his fans and will move forward with his individual show dates in December and throughout the month of January.”

Taking Kid Cudi’s place on the sold-out bill is none other than Jason Derulo, the voice of the chart-topping single “Whatcha Say.”