Ben Simmons' sister, Olivia Simmons, took a shot at his ex-girlfriend Kendall Jenner by bringing up the supermodel's allegedly poor baking skills. In a TikTok posted earlier this week, Olivia claimed that Jenner had attended a Simmons family gathering. She said that the former Nets player's relatives were all invested in a game of "Cards Against Humanity" when Jenner decided she wanted to bake some cookies, and it turned out to be a disaster."She was like 'I am gonna bake some cookies,'" Olivia said. "It was readymade cookie dough, so you didn't have to do much but place it at the right place at the right time. The only thing you need to do is chop them up evenly, no stop because I have never seen so many uneven cookies, like what... it was just hilarious.""The Kardashians, the Jenners, like weird bi***es." View this post on Instagram Instagram PostBen Simmons and Kendall Jenner started dating in 2018. Jenner confirmed their relationship during a guest appearance on "The Ellen Show". They reportedly split in 2019.Ben Simmons may miss NBA season for the first time in his careerBen Simmons is one of the few players in free agency who has yet to bag a contract with a team before the new season. The former No. 1 pick has slowly faded away from the spotlight since being drafted in 2016.Simmons has spent seven seasons in the league but has failed to make a name for himself. He was once considered a potential cornerstone for the Philadelphia 76ers, but recurring injuries have held him back.Earlier this week, NBA insider Marc Stein reported that Simmons had declined an offer from the New York Knicks. Since then, there have been no reports of other teams being interested in acquiring the former Nets player.Last season, Simmons averaged 5.0 points, 4.7 rebounds and 5.6 assists across stints with the Nets and the Clippers.