The 47-year-old singer and actress and 48-year-old singer and producer shared a goofy post from the studio Tuesday after announcing last week they'll collaborate on Lopez's new album.
"Studio shenanigans... Oh Deer!! #makinghistory #again #funtimes #familia Lol!!" Lopez captioned the chummy video on Instagram.
Lopez and Anthony split in 2011 after seven years of marriage and share 8-year-old twins Max and Emme.
Anthony and his Magnus Media will executive produce Lopez's new, Spanish-language album with Sony Music Latin.
"I am so excited and really looking forward to this new musical journey and to celebrate my Latin roots with Marc Anthony and the Sony/Magnus family," Lopez said in a statement Thursday.
"It is an honor to welcome Jennifer to the Magnus family," Anthony added.
"She has had enormous accomplishments in her career and has been representing our culture all over the world from day one."
Lopez and Anthony, who is married to model Shannon De Lima, previously had a friendly reunion in August.
Lopez brought their kids to the singer's concert at Radio City Music Hall in New York, where she surprised him onstage.
"#MiGente, thank you to the fans and @jlo for a wonderful concert. #AllAboutFamily backstage last night @radiocitymusichall #ThePrivateCollection #Tour2016," Anthony captioned a photo with his family at the time.
Lopez last released the album A.K.A. in 2014, which debuted at No. 8 on the Billboard 200.
She is expected to release a first single from her new album in November, with the record to debut in 2017.
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