Olivia Wilde's secret message to boyfriend Harry Styles after his Grammy win

Olivia Wilde showed her support to her boyfriend Harry Styles on social media.

It was a glittering night at the Grammy Awards 2021 and the singer won Best Pop Solo Performance with his track Watermelon Sugar over the weekend.

The Don't Worry Darling director, 36, gave fans a juicy hint she was thinking about her love, 26, and his success on her Instagram Story on Monday.

Olivia posted a picture of Paul McCartney sinking his teeth into a huge slice of watermelon — a cheeky nod to Harry's award-winning single.

No caption was required other than the emoji of two hands raised in the air celebrating.

Olivia Wilde's secret message to her boyfriend Harry Styles after his Grammy win (AFF/PA Images)

Harry flew to Los Angeles last week ahead of the Grammys while Olivia stayed in London with her two children Otis, six, and Daisy, four.

Fans had been hoping Olivia would join Harry at the star-studded bash.

Instead the Watermelon Sugar hitmaker was seen catching up with his ex Taylor Swift at the socially distanced A-list affair.

The Mirror approached Harry Styles and Olivia Wilde's representatives for further comment.

It was a glittering night at the Grammy Awards 2021 and the singer won Best Pop Solo Performance with his track Watermelon Sugar over the weekend (CBS via Getty Images)

The Harry and Olivia love story begun following the breakdown of her long-term relationship with the father of her children Jason Sudeikis.

Fate dealt its hand when the couple first crossed paths on the set of Don't Worry Darling; Harry landed a job acting in it while Olivia was directing.

Their first sighting as a couple emerged when Harry took Olivia as his date to his manager Jeffrey Azoff’s wedding in January.

They recently made the trip to London together after finishing filming Don't Worry Darling.

Olivia posted a picture of Paul McCartney sinking his teeth into a huge slice of watermelon — a cheeky nod to Harry's award-winning single (Instagram)

Back in November, Olivia spoke publicly about Harry for the first time in a gushing interview.

She told Vogue : "To me, he’s very modern, and I hope that this brand of confidence as a male that Harry has - truly devoid of any traces of toxic masculinity - is indicative of his generation and therefore the future of the world.

"I think he is in many ways championing that, spearheading that.

"It’s pretty powerful and kind of extraordinary to see someone in his position redefining what it can mean to be a man with confidence."