Janet Jackson Poses with Naomi Campbell at Supermodel's Boss Collaboration Launch Party

Janet Jackson is celebrating her friend Naomi Campbell!

On Sunday, the "Together Again" singer, 57, posted a photo on Instagram of herself posing with the supermodel, 53, at a launch party in the U.K. celebrating Campbell's collaboration with the luxury clothing brand Boss.

"Congrats @naomi 😘," Jackson captioned the photo, showing the two women wearing black and smiling for the camera. The singer's Instagram Story on Saturday featured a video of her laughing with friends while hanging out near the DJ booth at the event.

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Campbell posted a video announcing her collaboration with Boss on her Instagram on Saturday. Before the launch party that night, she spoke at an event at Selfridges.

"Announcing my new collaboration with BOSS at a store I grew up visiting as a child was a true full circle moment for me," Campbell captioned the video. "Thank you, @boss, and thank you, @theofficialselfridges & @elleuk, for having me."

In the video, Campbell was asked what it means to her to be a boss.

"Be on your hustle, never let up on your hustle," she replied, adding that "dedication, determination and drive" are also important.

"I was always told by the great, great President Nelson Mandela, 'You can sleep when you're dead,' she added. "If you've got the opportunity and you've got the energy, do it."

Boss also posted an Instagram video from the launch party, featuring all of the celebrities in the fashion world and beyond who showed up to support Campbell.