Anthony and Lopez launched their fashion lines -- the Marc Anthony Collection and the Jennifer Lopez Collection -- on Wednesday.
Forty-two-year-old Anthony marked the launch with a ribbon cutting at Kohl's department store in downtown Jersey City, N.J. Lopez did not attend, but Anthony says they collaborated a lot on the work.
He says: "I always had Jennifer as a soundboard and vice versa. I'm really happy about her line and I saw all the work that she put into it."
The pair announced their split in July after seven years of marriage.
The couple has 3-year-old twins named Max and Emme. Anthony said he's "really proud of" 41-year-old Lopez.