It's a boy for Kim Kardashian and Kanye West, the reality show star announced on Twitter on Sunday.

"You're such a good daddy to North & you will be the best daddy to our new son too!" Kardashian tweeted on Father's Day.

Kardashian and West are parents to daughter, North, who turned two last week. There's no indication yet if the new baby will have as fabulous birthday parties as his sister, who celebrated her second birthday at Disneyland.

Kardashian, who has been publicly sharing her struggles with infertility, has previously swatted down rumors that she knew the sex of the baby and that she was having twins.