Kim Kardashian is reportedly actively trying to get pregnant again

A source also told Us Weekly magazine: "Kim wants North to have a sibling who isn't too far apart in age."

News that Kim, who previously admitted she wants three children, is eager to expand her family with husband Kanye West comes less than one day after she vented her frustration about her current weight on Twitter.

She tweeted on Tuesday (05.08.14): "off to an intense workout. Can't seem to shake this last 15-20 lbs of baby weight. no more excuses. my baby is 1 years old! UGH (sic)."

She added: "I'm not gonna call it baby weight bc thats an excuse. i just gained weight & that's it. why is it so much harder to lose after baby though!! do any of u moms see their bodies just not the same? a different shape? ughhhh my hips & butt are huge now! they were big to begin with (sic)!"

Meanwhile, the 'Keeping Up with the Kardashians' star, who tied the knot in May, has reportedly purchased a new $20 million home with Kanye near her mother Kris Jenner's mansion in the Hidden Hills area of Los Angeles.

A source told gossip website TMZ.com that the couple, who are planning to sell their $11 million Beverly Hills house, as they are fed up of waiting for their extensive renovations to be completed, are now in escrow for the 3.5 acre estate, which was originally listed for $21 million and boasts two swimming pools, two vineyards and a 1,050 square foot entertainment pavilion.

The lavish house was previously owned by Lisa Marie Presley and the couple first fell in love with it a few months ago.