Kanye West must be ecstatic! Kim Kardashian announced on Father's Day via Instagram the gender of their second baby.

Posting an adorable photo of Kanye reading a book as two-year-old North West sits on his lap for Father's Day, the "Keeping Up With The Kardashians" star revealed the news.

"Precious moments like this when we were traveling on tour with you are what I live for. You're such a good daddy to North & you will be the best daddy to our new son too," Kim captioned the photo.

Kim Kardashian first revealed that she was finally pregnant with baby number two in a teaser clip at the mid-season finale episode of "Keeping Up With The Kardashians."

The day after it was announced, Kanye West and his selfie queen wife were spotted out and about in New York City just hours before they were to appear on the 2015 CFDA Awards red carpet. However, Kim's baby bump was not yet visible even in her sheer black gown.

A few days later, rumors started circulating amongst publications that Yeezy and Kiki were expecting twins. Some even claimed that two eggs were fertilized during an in vitro process - hence the rumors of twins.

Two weeks ago, the rumor mill started churning again. But this time, it seems to be somewhat correct. But Kim Kardashian came to Twitter to debunk them.

"So many rumors... we are not having twins, yes I am carrying my own baby lol & we have not told anyone the sex of our baby yet," Kardashian West tweeted.

Not only that, but Mrs. Kanye West also cleared up speculations on naming their second child South West.

"I don't like South West though, because North will always be better, and she has a better direction. I wouldn't do that. I don't think we'll go with another direction," Kim Kardashian told NPR.

Whether or not the baby's named South West, at least now fans know that Kim Kardashian and Kanye West aren't having twins, and that North West is going to be a big sister to a bouncing baby boy.