Photo: Kim Kardashian/Instagram

Kim Kardashian, caitlyn jenner

Kim Kardashian Westtook a moment to honorCaitlyn Jenneras she celebrated another trip around the sun Thursday.

The SKIMS mogul, 41, wished her former step-parent a happy 72nd birthday on her Instagram Story, posting a throwback photo of the two of them at the 2020Vanity FairOscars party.

“Happy birthday @caitlynjenner,” Kim wrote. “I love you so much and can’t wait to celebrate you.”

Her sisterKourtney Kardashianalso shared some memories with Caitlyn, posting several photos from family outings in recent years. “Happy birthday!!” wrote Kourtney, 42.

Kourtney Kardashian/Instagram

kourtney kardashian, caitlyn jenner

One photo was from Caitlyn’s70th birthday dinner at Nobu Malibuin 2019. Kim and Kourtney were in attendance, as wereKendall, 25,Kylie, 24,Brody, 38, andBrandon Jenner, 40, as well as Brandon’s now-wife Cayley Stoker and Caitlyn’s friend and managerSophia Hutchins.

Caitlyn welcomed Brody and Brandon with ex-wifeLinda Thompson, 71, and she also shares daughterCassandra Marino, 41, and sonBurt Jenner, 43, with ex-wifeChrystie Scott. She was step-parent to Kourtney, Kim,Khloé, 37, andRob Kardashian, 34, when she was married toKris Jenner, 65, with whom she shares Kendall and Kylie.

Though Caitlyncame out as transgenderin 2015, two years after she and Kris announced their separation, she told PEOPLE last year that some of her kidsstill call her “dad.““I’ll be their dad until the day I die,” Caitlyn said.

“Eighteen grandchildren. I keep telling the girls — they’re not too excited about this, but — I wanna go for 30,” Caitlyn said. “Thirty grandchildren. It’s a round number. I just found out the other day that I have another one in the oven. Yes, I found that out the other day. So that’s 19.”

source: people.com