Caitlyn Jenner breaks silence after Kylie gives birth

Caitlyn Jenner marked the birth of her newest grandchild Monday night with a sweet throwback post dedicated to daughter Kylie.

“My daughter just had a daughter,” the 68-year-old former Olympian gushed on Instagram. “It’s amazing to be by your side through this journey. She’s SO beautiful already. Can’t wait to watch her grow. Throwback to my baby, as a baby @kyliejenner.”

Kylie, 20, replied to Caitlyn’s message, “Love you.”

The makeup mogul welcomed her first child with boyfriend Travis Scott on Thursday, Feb. 1. Though Kylie has yet to reveal the baby’s name, well wishes from her famous family continue to pour in.

On Sunday, Khloé Kardashian, who is also pregnant, shared a photo of herself and Kylie cradling their growing bellies.

“Congratulations My Sweet Kylie! What a magical ride it’s been!” Khloé, 33, wrote on social media. “I’ll miss you bumping along with me. Never in a million years did I think we would do this together but it’s been that much more special because of it. God is so great!! He had His plan all along! I love you little mama 💕 love big mama.”

Kim Kardashian also praised Kylie on Twitter, writing Monday, “You are going to be the best mom to your new baby girl!”

The Kardashian clan continues to expand following the birth of Kylie’s baby girl. Kim and husband Kanye West welcomed their third child, daughter Chicago, in January via surrogate. Khloé and boyfriend Tristan Thompson are due sometime this spring.