Rosalind also struck a casual vibe with her dark hoodie and black leggings.
Lars, meanwhile, was adorable in his tie-die tee and shorts.
Mel and Rosalind were first linked back in 2014 and welcomed Lars three years later.Despite their age gap of 30 years, the couple appear to be going from strength to strength.
Shortly before he began dating Rosalind, Mel had a tumultuous relationship with Russian singer-songwriter Oksana GrigorievaThe couple welcomed daughter, Lucia, in 2009 and separated a year later, after Oksana alleged that Mel punched her in the face and filed a restraining order against him, via People