Baby on board for Bruce Jenner's son

While Kim Kardashian was shown on Sunday's new season premiere of Keeping Up With the Kardashians trying desperately for Baby No. 2, her stepbrother Brandon Jenner and his wife, Leah, were announcing that they are expecting.

That's the way life goes in the Kardashian-Jenner clan.

On Instagram, Bruce Jenner's third child (with ex-wife Linda Thompson) and Leah were shown in a sweet photo, saying it was "time" to share the good news.

Bruce Jenner's family tree shakes out like this (according to Wikipedia):

With Chrystie Crownover, his first wife (1972 to 1981), he had two children, Burt and Casey.

With Thompson, whom he wed in 1981, he had two children, Brandon and Sam Brody, known as Brody. The two sons starred on the reality show The Princes of Malibu. Jenner and Thompson split in 1986.

Jenner married Kris Kardashian in 1991 and is father to daughters Kendall and Kylie.

The Olympic star and grandpa is now single. Sunday's episode featured a "Bruce on the Loose" party.