Britney Spears wrote a message of thanks to Justin Bieber on Wednesday as she shared a video of herself dancing to his music on Instagram.
The 40-year old played the track 'I Don't Care' by Bieber and Ed Sheeran as she frolicked around her living room in a red crop top and tiny blue shorts.
Earlier in the day the pop superstar danced in the same outfit to Janet Jackson's All Nite (Don't Stop).
Tagging 28-year old Justin in the post she wrote: "Remember when you visited me in my dressing room on tour and your beautiful little mamma walked in and said "do you know where a tanning bed is?"
"You were 15 and you were adorable! Thank you for your music... you're a little devil now... I know because I have boys... but you're a timeless genius and I will always dance to your music."
Within two hours the video had been viewed over 850,000 times, receiving 2400 replies.
One user commented: "Please we need a collaboration! The world needs it!"
Another wrote: "I love this so much! A queen supporting a king."
A third added: "You're an icon Britney. Thank you for supporting Justin.
A fourth responded: "It makes me so happy to see you, Britney, being that happy and enjoying yourself! That sparkle, that you've always had, is back and shining bright! The light in your eyes! You've always inspired me since childhood and thank you for being so strong and remaining kind after all! God bless you."
Last week, meanwhile, Britney's fiancé Sam Asghari has reflected on the couple's tragic recent miscarriage by saying he is remaining "positive".
The 28-year-old former personal trainer, who has focused his attention on breaking into the acting industry, opened up about the heartbreaking loss during a recent interview with GQ.
Sam said in the interview: "We're positive about it. It's something that happens to a lot of people. And one beautiful thing that I heard was when the baby's ready, it'll come.
"So that was a beautiful thing somebody had said was, it's a common process and the female body is just so amazing, and just the human body in general is so beautiful that it heals itself. And that when the baby's ready it'll be the right time."
Britney had announced she was pregnant on April 11 to continue her upturn in fortunes after her conservatorship had finally ended in November last year.