Sienna Miller met up with Balthazar Getty in London on Thursday, shopped on Friday and got dressed up to walk the red carpet with Keira Knightley at the 2008 British Independent Film Awards last night. Even though Sienna recently said she was happy being single it looks like she's back with Balthazar. They were spotted holding hands around the city, and since Balthazar missed out on spending Thanksgiving with his kids it seems like he might be serious about giving it another try with Sienna. Given her history with men it isn't surprising her relationship with the actor is on-again, although it probably doesn't help her career or please her fans.

To see more of Sienna and Balthazar as well as Keira, James McAvoy, Ben Kingsley and others at the British Independent Film Awards read more

Conveniently, Madonna's tour brought her to Miami for the Thanksgiving weekend where A-Rod just so happened to be with his family. On Wednesday evening, Alex was in the front row at her concert — even handing her water between songs, ugh. He managed to double up on Thanksgiving, eating an early afternoon meal with his ex-wife and daughters before reuniting with Madonna at her Star Island place. By Saturday night she was off again performing in Mexico City, but it doesn't sound like Madonna's too upset with the third baseman about skipping Kabbalah class.

To see more photos of Madonna and Alex just read more

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Britney made multiple stops this weekend performing her hit single, "Womanizer." Her first one was at the Bambi Awards which most of you all thought was amazing. She continued on to Paris to perform on Star Academy and then to London for X Factor. Each act was slightly different (check out videos after the jump) and the good news is Britney's confidence is back and she's got a busy week ahead of her. She had a huge smile on stage and even Simon Cowell gave her a standing ovation! Tonight is her MTV documentary which we can't wait to watch. Then Circus drops on Tuesday, which is Brit's 27th birthday, when she will also stop by Good Morning America. Britney was seen leaving London today to head to NYC for part two of her promotional tour. Will you be watching Britney on MTV and GMA?

For lots more picture of Britney in Germany, Paris, and London and two of her latest video performances, read more