Mariah and Nick, who are parents to five-year-old twins Moroccan and Monroe, ended their day out on Thursday by grabbing a bite to eat at the Hard Rock Cafe at Universal Studios Hollywood.
Captioning the photo, Nick, who filed for divorce from Mariah in December 2014, wrote: "A little dinner after karate class!!"
The photo shows all four happily smiling while sitting at a table, with Monroe and Moroccan grinning too.
'Heartbreaker' star Mariah is now engaged to Australian billionaire James Packer. The couple announced their engagement in January, with James giving her a 35-carat diamond engagement ring.
Recently speaking to E! News about James, Mariah said: "He's one of those people that just always is there for people. And I think that is a quality that I haven't seen - except in myself."
The couple are yet to set a wedding date, but this will be Mariah's third marriage. Other than her marriage to Nick in 2008, she married Tommy Mottola in 1993, divorcing in 1997.
In other news, Mariah is getting her own reality show on E! called Mariah's World. The special eight-episode docu-series will follow Mariah during her European tour and document her whirlwind fairytale romance.
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