Kim and Kanye expecting a boy

The reality star sent out a tweet on Father’s Day referring to ‘our new son’.

Kim Kardashian and rapper Kanye West attend the 2015 CFDA Fashion Awards on 1 June 2015 in New York City. Picture: Getty Images/AFP.

JOHANNESBURG - A tweet sent by pregnant Kim Kardashian on Father's Day suggests that she is expecting a boy.

The reality star sent a message to hubby rapper Kanye West on behalf of their two-year-old daughter North, saying he was a good dad to her and would be "the best daddy to our new son too".

You're such a good daddy to North & you will be the best daddy to our new son too! ๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘งโ€๐Ÿ‘ฆ

Before announcing her second pregnancy earlier this month, Kardashian has been vocal about the couple's attempts to conceive again.

"We are trying. We try every single day. You can't try harder than we try," Kardashian told E! News. "It's getting exhausting. He (West) always says, 'Trying for baby number two isn't as fun as trying to baby number one'."