(Cover) - EN Showbiz - Kim Kardashian thinks being pregnant with her sister at the same time would be "ideal".

The reality TV beauty wed professional basketball player Kris Humphries in August. Kim has been very vocal about wanting to start a family with her beau.

Arriving with sister Kourtney at a party in New York City last night, Kim revealed what her ideal pregnancy situation would be.

"Hopefully [my sister Kourtney and I will be pregnant] at the same time!" Kim told E! Online. "That would be ideal!"

There have been several rumours about whether Kim is pregnant right now. Although she has reportedly purchased a home pregnancy test in recent weeks, sources close to the star reveal the results were negative.

"She's definitely not [pregnant]!" a source dished.

Last night's lavish party had violinists, acrobatic performers and a profusion of confetti. Arriving two hours after the official start time, Kim and husband Kris made a fashionable entrance. As soon as Kim graced the stage and got hold of the microphone, she expressed her excitement about being a newlywed.

"We usually say, 'The Kardashians are here!'" Kim exclaimed. "But now I have to say, 'The Kardashians and the Humphries are here!'"

Kim is currently filming season two of reality show Kim & Kourtney Take New York with sister Kourtney. (C) Cover Media