They’re the perfect ex-couple.

Naomi Watts and ex Liev Schreiber celebrated their son Sasha’s high school graduation as a blended family.

The graduate was seen posing with Schreiber and Watts — and their respective spouses, Taylor Neisen and Billy Crudup — in a photo posted to the “Perfect Couple” actor’s Instagram Thursday.

“The graduate!!!” the proud father captioned the sweet photo.

Sasha, 17, officially completed his schooling at the Manhattan private school Friends Seminary, with the graduation ceremony being held at Central Park Thursday.

Schreiber, 57, wore a charcoal sport coat and matching pants, a blue button-down, sunglasses and a camera around his neck.

His wife, 32, looked stylish in a denim maxi dress and sunglasses.

The “King Kong” actress, 56, went with a colorful floral sundress, a sunhat and sunglasses. She also matched her brown shoes to her leather satchel.

Meanwhile, Crudup, 56, went with a blue suit, no tie and aviator shades.

Sasha honored his academic achievement in a gray suit with a blue polka-dot tie, suede shoes and sunglasses.

Watts also shared photos from the event, including a snap of her ex and their son with the caption “Congrats.”

She also re-shared Schreiber’s photo to her Instagram story, writing, “What an incredible day,” as well as a selfie with her son in which she raved, “He did it! So so proud.”

Watts then shared several images capturing Sasha walking in his graduation procession and receiving his diploma.

She and Schreiber, who broke up in 2016 after 11 years together, also share 16-year-old daughter Kai.

The budding trans model, who uses “she/her” pronouns, was also spotted at the event wearing a white ruffled sundress and brown slouch boots in paparazzi photos obtained by Page Six.

Watts married Crudup in June 2023 while Schreiber married Neisen a month later. Schreiber and the former pageant queen, 32, welcomed daughter Hazel Bee that August.

The “Morning Show” actor, for his part, shares son William with ex-wife Mary-Louise Parker, to whom he was married from 1996 to 2003.