Caitlyn Jenner is stepping up her social media game.
The 65-year-old star took to Twitter today to post her first Throwback Thursday tweet in honor of son Brandon Jenner's 34th birthday.
"Happy birthday, Brandon @sprandoni! Love you" the Keeping Up With the Kardashians star captioned an adorable photo of Brandon as a baby boy.
Brandon, who is currently expecting his first child with wife Leah Jenner, has yet to respond to the post via his own social media page, but surely, the musician is thankful for the shout-out from his proud parent.