Congratulations are in order for Caitlyn Jenner's eldest son, Burt – he's just welcomed a little baby boy!

Last night, the oldest Jenner sibling took to Instagram to share really cute snaps of his new born baby which he had with his longtime love Valerie Pitalo.

He captioned the first pic: "She did it."

 

She did it!

A photo posted by Burt Jenner (@bjenner) on

And then shared another adorable snap, saying: "So far so easy… Only 17 years and 364 days to go!"

 

So far so easy… Only 17 years 364 days to go!

A photo posted by Burt Jenner (@bjenner) on

Burt is clearly delighted with his new arrival, and we wish him and Valerie all the best with their little one.