Kim Kardashian Pregnant

Kim Kardashian's former BFF Paris Hilton is putting their old feud even further behind them, and toasting Kim's big baby news ... TMZ has learned.

Our sources in Miami -- where Paris is getting ready to celebrate NYE -- tell us P was shopping when a friend walked up and broke the news about Kim and Kanye West having a baby.

We're told Paris simply smiled and said, "So happy for her, they are perfect for each other."

Paris and Kim were on the outs for years until a few months ago when they reunited and danced up a storm at a friend's party -- and then met up again at a recent event in Miami.

We're told Paris is ringing in 2013 with a high-dollar double date -- her and model bf River Viiperi ... along with sister Nicky Hilton and her billionaire bf James Rothschild.

Kim Kardashian's got a little Kanye in her -- as in she's pregnant with Kanye West's baby ... according to the rapper himself.

Yeezy dropped the baby bombshell on stage Sunday night in Atlantic City by singing, "God brought us a whole new plan, baby. 'Cause now you're having my baby."

As Kanye went into the next song ... he asked the crowd, "Can we make some noise for my baby mama right quick?"

Our Kardashian sources confirm Kim is 12 weeks pregnant, and apparently several members of the K clan have been sitting on the secret.

Shortly after Kanye's announcement ... Khloe Kardashian tweeted, "Keeping secrets is hard with so many family members! Especially when you are so freaking excited!!!"

Kourtney also tweeted, "Been wanting to shout from the rooftops with joy and now I can."

Mike Walters has been telling you for months ... that Kim and Kanye would have a baby before getting married, and soon. Well, now that it's happened, we gotta ask ...

Kanye West and Kim Kardashian were all over each other -- like a couple o' teenagers -- when they touched down in LA this morning ... just hours after announcing they've got one in the oven.

KK & KW were arm in arm -- a few paces behind proud momager Kris Jenner -- as they strolled through LAX ... but it won't be long before the couple and their little (very little) one are back in the air.

As TMZ first reported ... Kim's going through with her scheduled NYE appearance tonight at 1 Oak Nightclub in Las Vegas.

Kim Kardashian isn't letting a little pregnancy slow down her New Year's Eve plans ... 'cause she will be partying -- as scheduled -- in Las Vegas tonight, TMZ has learned.

Kim has been set to ring in the new year at 1 Oak on the Vegas strip -- for some time now -- and we're told nothing's changed since Kanye West, unexpectedly, revealed their baby news.

The reason? $$$$

Sources tell us Kim will pull in six-figures for the appearance -- plus, boozing is a non-issue for KK ... who, we're told, has never been a big drinker anyway.

Also, our Kardashian sources say Kanye will be by Kim's side during the ritzy event -- it costs $125 just to stand in VIP -- and at least another $3,000 to get a table.

Kim Kardashian finally posted her own reaction to Kanye West's announcement they're having a baby ... and it includes an emotional shout out to her late father, Robert Kardashian, and Kanye's late mother.

On her blog, Kim said, "We feel so blessed and lucky and wish that in addition to both of our families, his mom and my dad could be here to celebrate this special time with us."

Kim's dad Robert died of cancer in 2003 ... and gained national attention because he was one of OJ Simpson's best friends, and one of his defense attorneys.

You'll recall Kanye's mom Dr. Donda West died 5 years ago when she suffered severe complications in recovery from plastic surgery.

Kim Kardashian wasn't going out of her way to squash all those pregnancy rumors -- in fact, in hindsight ... she damn near handed the world her ultrasound.

Just last week Kim and daddy-to-be Kanye West were spotted arm in arm leaving her OB-GYN.

DUH!!

We all know the only reason a dude accompanies his lady to that doctor is if she's having your baby.

As TMZ first reported, Kim and Kanye's original plan was to keep the baby hush-hush until she started showing and people started asking questions.

Kanye West's on stage announcement that Kim Kardashian is pregnant was a total shock -- to Kim Kardashian ... TMZ has learned.

Sources close to Kim, who were at the concert, tell us Kim had "no idea" Kanye was going to tell the world she's knocked up. We're told she and Kanye had not discussed announcing it -- and, in fact, had planned to say nothing until she started showing.

According to our sources, Kanye was moved to blab on stage because Kim's BFF and her mom were at the show -- along with several of Kanye's family members.

Lamar Odom was so excited about his sis-in-law Kim Kardashian's pregnancy announcement ... he hit the club to toast her ... by himself.

Okay ... LO was probably heading out anyway, but we caught up with him outside Greytsone Manor shortly after Kanye West dropped the baby news -- and he summed up his joy in 3 words: "Great. Great! Awesome."

Alright, it was 2 words ... with a repeat.

Lamar tweeted a few more, saying ... "There's nothing like bringing life into this world! Let's keep Gods blessings coming!