In the picture, 44-year-old Elliott, clad in all-black, seemed to be enjoying the studio session with Mars, reported Aceshowbiz.
They're all smiles in the pictures, which came with a caption that read, "Had a blast vibing wit my fam @BrunoMars @ the studio! GoodVibes He got some [fire emoji]! He such a rare gem! Big up Sunny."
Elliott and Mars are currently readying their respective new album. Following her much-talked-about appearance at the 2015 Super Bowl, the "Work It" hitmaker has been working hard on what would be her first LP since 2005's "The Cookbook".