AceShowbiz - 50 Cent walked down memory lane on Eminem's 51st birthday. To commemorate his longtime pal's latest milestone, the "In Da Club" hitmaker took to social media to unleash throwback pictures of the two.

The post, which was shared on Instagram, included photos of Fif and Em performing together onstage. The last one, in the meantime, saw the pair posing with Dr. Dre when they were celebrating 50 getting his Hollywood Star for the Hollywood Walk of Fame.

In the caption, Fif wrote, "Happy Birthday to the living legend @eminem love you to death man." He added, "God bless wishing you many more."

50 Cent and Eminem have been friends for around two decades. Back in September, the "Not Afraid" spitter made an appearance at the former's "Final Lap Tour" stop in Detroit, Michigan. During the concert, which took place at the Pine Knob Music Theatre, Eminem became Fif's surprise guest.

At one point during the show, Eminem showed up onstage to deliver a number of songs. He performed his collaborative track with 50 Cent titled "Patiently Waiting" which is featured in "Get Rich or Die Tryin' ". He also rapped another of their collaborations titled "Crack a Bottle", featuring Dr. Dre, which was released back in 2009.

Wrapping up his performance, the "Sing for the Moment" spitter showed his love to Fif as he exclaimed, "Detroit, make some noise for one of the best friends that I've ever known, 50 Cent!" He added, "And also, make some noise for hip-hop's 50th birthday, y'all … Detroit, I love y'all, man."

Following the show, Eminem let out a number of photos from his performance with 50 Cent. One of the pictures captured the two best friends shaking hands when they were on stage. Along with the snaps, he penned in the caption of the post, "Had 2 come out with @50cent last night… thanks 4 the love, Detroit! 'FINAL LAP TOUR!!!' "