Fans think they know what Adele said before Rihanna's Super Bowl performance

Eagle-eyed viewers think they've cottoned on to what Adele said on camera before watching Rihanna put on her incredible performance at the Super Bowl halftime show.

The 'Hello' singer was spotted in the crowd as Rihanna took to the stage, but are your lip reading skills good enough to figure out what she said?

See if you can make out what she is saying here:

Given that it's one of the most highly anticipated sports games in the US, it's no surprise that there were loads of celebrities in attendance as the Kansas City Chiefs took on the Philadelphia Eagles at the Super Bowl yesterday (12 February).

Bradley Cooper, Gordon Ramsay and Jay Z were just some of the famous faces in the crowd, but Adele has been talked about more than most, as she admitted that she wasn't actually interested in the football game at all.

She admitted earlier this month that she was 'going just for Rihanna', and it looked like she meant it as she was spotted at the game kicking back with a drink and relaxing behind huge sunglasses.

But just before Rihanna was set to entertain the crowd, Adele was caught on camera saying something - potentially to those around her, but noticeably while looking straight ahead in the direction of the camera.

@Ela_TVM/Twitter

Unfortunately, we can't actually hear what she said, but some viewers think they've been able to read her lips and believe she was speaking about Rihanna's imminent performance.

One viewer shared their theory online, quoting what they think Adele said as they wrote: "She’ll have some weed and she’ll be like [calm emoji] she’ll be fab, she’ll be fab."

With this theory in mind, watch the video back and see if you think they've got it right.

Whether weed had anything to do with it or not, Rihanna definitely proved to the crowd that she really was 'fab' as she performed hits including 'Diamonds', 'We Found Love' and 'Rude Boy' all while carrying her second child - a revelation that also came in her performance.

The singer has been branded 'incredible' and a 'queen' for her show, and has received praise for her decision not to welcome any surprise guests to join her in the performance.

Ahead of her gig, Rihanna noted the Super Bowl is 'one of the biggest stages in the world', adding: "It is an entertainer's dream to be on a stage like like that."