EXCLUSIVE: 10 Backstage Secrets From Super Bowl 50 - Behind The Scenes With Lady Gaga, Gwyneth Paltrow and Dav

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We all witnessed Lady Gaga crush the National Anthem during Super Bowl 50 on Sunday. Those nails! That voice! But behind the scenes, there was more to the Lady Gaga/Beyonce concert the biggest sports event of the year than a football game and Gaga's festive nails. Here's what you didn't see on TV during the Super Bowl:

1. Gwyneth Paltrow shows her support for ex-hubby Chris Martin

They really ARE friends
. Gwyneth Paltrow threw on a cream turtleneck sweater and bell-bottom jeans to stop by and show her support for ex-husband and Coldplay frontman Chris Martin, who set the Pepsi Super Bowl 50 Halftime Show stage on fire. Beyonce’s daughter, Blue Ivy, hung out with Paltrow, along with Moses and Apple, Paltrow and Martin's kids. #SquadGoals 

2. Lady Gaga crushed it -- and then cried

Lady Gaga was moved to tears as she proudly walked off the Pepsi Super Bowl 50 Halftime Show stage after her crowd-pleasing rendition of the National Anthem. Overwhelmed by the reactions of those waiting on the sidelines, the singer wiped her misty eyes and blew kisses to onlookers praising her performance. Ever gracious, she took a few snaps with kids and signed some autographs. Later, she stopped by Jay-Z's suite with her mom.

3. Gaga wasn't nervous... but Coldplay was

According to Coldplay's lead guitarist Jonathan Mark "Jonny" Buckland, who was walking into his dressing room when ET caught up with him, the band had the jitters before hitting the Super Bowl stage. "We're excited," Buckland said. "A little nervous but we're excited." 

4. David Beckham took his son Brooklyn to the game

After flashing their Super Bowl 50 tickets en route to the big game in an Instagram post, David Beckham and son Brooklyn, 16, snuck in behind the red carpet. In a grey suit, David looked as dapper as always. And dressed in black, so did Brooklyn! And my oh my -- they sure do grow up fast. Brooklyn is taller than his dad!

5. Taraji P. Henson and NFL player kiss in the NFL suite

Still on! Empire actress Taraji P. Henson and NFL player Kelvin Hayden were seen getting cozy and kissy in the NFL suite. 

6. Gwyneth and Jeremy Renner have a run-in

Avengers reunite… at the Super Bowl? You better believe it. Gwyneth was spotted getting onto an elevator as her co-star Jeremy Renner was on his way out. With Moses and Apple in tow, the two actors hugged. They greeted each other, and then Renner gushed over Coldplay's performance. "It was so good!" she agreed.

7. The BEATS go on for Cam Newton and his fellow Panthers

Bose is an official sponsor of Super Bowl 50, but that didn't stop Carolina Panthers quarterback Cam Newton and his fellow Panthers, who were competing against the Broncos, from walking into the stadium sporting... BEATS?! Yes: The guys were rocking out to tunes on their SB50 headphones, probably listening to Beyonce's perfect new single.

8. Bruno Mars wouldn't reveal his hair

Before funking up the Super Bowl Halftime stage with Beyonce and Coldplay, Bruno Mars was seen strolling into his dressing room surrounded by a sea of people. Without a hat on -- NO HAT WHAT? -- Bruno hid under someone's jacket. "I can't reveal it," he teased. And then, with Bey and Coldplay and a kaleidoscope of color, he did, curls and all.

9. NBA MVP Stephen Curry meets Aaron Rodgers and Olivia Munn

Here's to fast friends! NBA MVP Stephen Curry and his wife, Ayesha, hung out with Green Bay Packers quarterback Aaron Rodgers and girlfriend Olivia Munn -- and it sure seemed like the first time. They chatted for a quick minute before taking in the game.

10. Everyone was wearing Chris Martin's "Love" pin

This is definitely something we can get behind: Chris Martin's "Love" pin, which celebs like David Beckham sported as they walked out of his suite. Speaking of love, Martin was feeling it during his Super Bowl performance. He thought the game was "wonderful," but how about that halftime performance? Can anything ever top the high of performing at the Super Bowl? "I don't think it's possible," he said.

To relive Lady Gaga’s spectacular performance of the National Anthem, see the video below: