TMZ obtained footage of the National Anthem rehearsals -- shot Saturday in Cowboys Stadium.

Christina not only gets all of the lyrics correct -- but the delivery was Whitney Houston-esque.

So much for the maxim practice makes perfect ...

Kim Kardashian was pulled onto the stage by Prince last night in NYC -- but he quickly kicked her off when she wouldn't shake her assets for him!

The reality TV star and boyfriend Kris Humphries were in the audience for Prince's show at Madison Square Garden last night -- when he started pulling audience members from the crowd to come on stage to dance ... including Kim!

Telling the crowd "She might be too sexy," Prince picked out Kim and then waited for her to start moving ... and she completely froze! "Get off the stage!" he shouted ... and off she went.

"OMG Prince just pulled me up on stage!!! I'm shaking!!!!" Kardashian tweeted at the show, "I was so nervous I froze when Prince touched me!!!!"

She reportedly got a second chance on stage, tweeting again later "Went up on stage AGAIN! This time I redeemed myself! We all danced while Prince played the piano! Wow! What a night!"

Just because there were no cheerleaders at Super Bowl XLV -- doesn't mean you should be deprived of their cheery goodness!

You're welcome.

Christina Aguilera famously flubbed the lyrics to the National Anthem before the Super Bowl, but surely she's not the only person to ever mess it up ... or is she?

Give a glance at the following photos and see if you are skilled enough to spot the subtle differences!

Before she got famous with her acting and killer body, this little girl from Tennessee liked to walk around the house in overalls and teddy bear tees.

Can you guess whose serious man mug was given a silly celebrity scramblin'?

Victoria Beckham has kept her belly under wraps since she and David Beckham announced her pregnancy -- but today we're getting our first look at her sprouting baby bump!

Victoria was spotted earlier today wearing a loose fitting top, skinny jeans, a cute blazer and studded Louboutins when she arrived at Heathrow Airport in London for a flight -- proving that her personal style isn't taking a backseat to her pregnancy.

"Victoria and I are expecting our fourth child this summer," Beckham told fans last month -- adding "The boys are very excited about the arrival of a new brother or sister."