Kourtney Kardashian and Scott Disick Reunite to Celebrate Son Mason's 8th Birthday

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The exes came together to mark their first-born's eighth birthday on Friday.

It was birthday bowling and balloons for Mason Disick on Friday!

Kourtney Kardashian and Scott Disick reunited to celebrate their first-born’s eighth birthday with a fun afternoon of bowling with friends and family at Bowlero in Woodland Hills, California, ET has learned.

The couple’s younger children, Penelope and Reign, were spotted at the bash, along with Kourtney’s sister, Kendall Jenner, niece, North West, and mom, Kris Jenner, who was accompanied by boyfriend Corey Gamble. Rapper friend Xzibit and his wife, Krista Joiner, along with their son, Gatlyn, were also in attendance, as well as Travis Barker.

According to an witness, Kourtney and Scott were "civil" and even bowled in the same lane together.

The group chowed down on gluten-free pizza, gluten-free chicken tenders and fries, and the kids also played in the arcade.

Of course, it wouldn’t be a birthday without balloons, and Mason had his name spelled out in giant gold ones, brought to the venue by Kourtney!

The reunion comes as Scott continues his romance with Sofia Richie and Kourtney continues to date Younes Bendjima.

The famous family weren't the only celebs hitting up Bowlero for  birthday fun -- Westworld star James Marsden also visited the bowling alley and party venue to celebrate his son Williams Luca’s fifth birthday the following day.

See more Scott's new relationship below.

-- Reporting by Katie Krause