Exes Jessica Simpson and Eric Johnson reunite for son Ace’s 6th grade graduation

Jessica Simpson and Eric Johnson put their amicable co-parenting on display at son Ace’s 6th grade graduation Wednesday.

The former couple attended the 12-year-old’s ceremony in Los Angeles alongside daughters Maxwell, 14, and Birdie, 7, in photos obtained by Page Six.

Simpson, 45, matched her red dress to her lipstick for the event, completing her look with black heels and an updo.

She accessorized with statement silver jewelry and a pair of sunglassses.

Johnson, for his part, cut a casual figure, with the retired NFL player pairing a black T-shirt and jeans with sneakers and a backward baseball cap.

At one point, the 46-year-old appeared to snap a selfie with his former spouse.

After the ceremony, the exes — and more family members — celebrated Ace’s milestone moment with dinner at Benihanas.

This is a developing story…