Yesterday's Super Bowl provided us with a whole lot of great telly but there's one particular moment that is really taking the internet by storm.
During the game, Christian McCaffrey put the San Francisco 49ers up by 10 late into the second quarter, so it's no surprise to anyone that the Gossip Girl star was getting - let's just say - very into it while sat right next to Taylor Swift.
Blake clearly wasn't shy in showing her support for Taylor's other half, Travis Kelce, who was down on the football field for the Kansas City Chiefs and hoping to get a Super Bowl hat trick by securing his team's third win at the NFL's annual league championship.
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The star was seen wearing a red Adidas tracksuit with a white top - if that isn't true support for your friend, then I don't know what is.
Blake and Taylor could be seen chatting just before kick off when they later realised their quiet conversation was being projected right across the stadium.
It was at this point that Blake appeared to let a swear word slip out of her mouth while being totally transfixed by the game - a moment that has since left fans in absolute stitches.
She and Taylor were enthusiastically watching the match while Blake appeared to mouth the words: "Come on, come on!"
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Then just moments later, The Age of Adaline actor then jumped for joy while holding onto Taylor before she seemed to exclaim: "Shut the f*ck up!"
Fans have since rushed to social media to share their reactions to Blake's animated reaction to the game with one X (formerly Twitter) user writing: "Blake is all we need to see!"
A second penned: "'Shut the f*ck up' - you and me both Blake Lively. You. And. Me. Both."
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"Blake said SHUT THE F*CK UP lol," a third chimed in while a fourth joked: "Forget Usher, just put Taylor and Blake out on the field at half-time with hot mics and let us listen to them gossip."
A fifth quipped: "Blake Lively is so many of us at Super Bowl parties right now."
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"BLAKE LIVELY IS HER," gushed a sixth, while another added: "Blake Lively in almost every interview: 'I don't swear'. Blake Lively at the Super Bowl: 'Shut the f*ck up!'"
A final X user echoed: "Forget Taylor Swift, Blake Lively the real star of the Super Bowl."
Topics: Blake Lively, Super Bowl, Sport, Celebrity