Baby Boom: All of the pregnant celebrities due in 2018

There is definitely something in the water in Calabasas. Khloé Kardashian is ALSO pregnant with her first child - gasp. E! News has confirmed that Khloé and her boyfriend Tristan Thompson, will be welcoming a baby in 2018. We couldn't be more happy for Khloé, as it's no secret she always wanted to have children, and she's a great auntie to her sisters' children. Congratulations to the Kardashian bunch, this year will be a handful.

Congratulations are in order to the Rooneys! The couple is expecting their forth child, and on track to building their on football team. Coleen took to social media to share the exciting news with fans, writing: "So Happy!!! ... Never denied the news, but I was always protecting it!! Had scan & all checks are fine... Baby number 4 is on its way. 😍"

Instagram's CEO Kevin Systrom took to (of course) Instagram to announce his wife's pregnancy - and the post is the most adorable thing you'll read today: "I’m happy to share that @nicole and I are expecting a baby girl in January! Some of my favorite moments on Instagram over the years have been following along as my friends and teammates have become parents and share that experience. I can't wait to join in! I am so lucky that I get to be Nicole’s husband and the father of our little girl. 🎉". The official Insta-famous baby is on her way!

How stunning does April Love looks pregnant? Robin Thicke and April Love are expecting their first child together. The couple took to social media to announce the news sharing a photo of the first sonogram, captioned: "Robin and I are very excited to share with you all that we are having a baby! The due date is March 1st".

Another couple expecting baby number three: Jack and Lisa Osbourne. The rocker duo have confirmed the pregnancy sharing several baby bump pictures on social media - our favourite so far it's definitely this adorable one, captioned: "Literally ate the biggest burrito ever 🌯"

Rose Byrne is pregnant with baby number two! The star revealed to DavidJones.com that she and Bobby Cannavale are expecting: "I’m a little tired but feeling good," Rose told the site: "Everyone was very sweet on set today, and you always get a little bit more attention when you’re pregnant, which is fabulous". Last year, the couple welcomed their first child, Rocco Cannavale.

Kate Middleton is pregnant with baby number three - is this the best news ever or what?! The Kensington Palace has confirmed that the Duke and Duchess of Cambridge are giving 3-year-old Prince George and 2-year-old Princess Charlotte a new baby brother or sister. "The Queen and members of both families are delighted with the news" - the statement read.

OMG, we're so excited right now. Behati Prinsloo took to Instagram to announce that her and gorgeous hubby, Adam Levine, are expecting their second child - she captioned the baby bump shot "round 2". We can't wait to find out what Dusty Rose's baby brother or sister will be called. Congratulations to the happy couple!

This news almost broke the internet, Kylie Jenner is reportedly pregnant with her first child. WHAT?! The 19 year-old is expecting a baby girl with boyfriend Travis Scott. Kylie and the rapper have been dating since April 2017 and after only two months together they got matching tattoos.

Ugly Betty star America Ferrera and her husband, Ryan Piers Williams, are expecting their first child together. America announced the happy news on New Year's Eve with an Instagram post of the pair holding a babygro, captioned: 'We’re welcoming one more face to kiss in 2018!' Cute!

Our forever-couple goals – Chrissy Teigen and John Legend – are expecting their second child, and our bet is on a little baby brother for Luna. Chrissy announced the pregnancy with an adorable video of her daughter pointing to her stomach and saying 'baby'. Awww stop it!

Rachel McAdams is going to be a mumma! Sources have confirmed to E! News that Rachel is expecting, but keeping a low profile about the pregnancy for the moment. It's speculated that the dad is screenwriter Jamie Linden, but the dup were last spotted together in 2016. The 'The Notebook' actress told People a couple years ago that she would love to be a mum: "Having a few [kids] would be great," she told the magazine, "My mom is a great inspiration to me...She's a nurse and very nurturing and gentle. She lets me be who I am. Hopefully I can take on those qualities and be as great as her."

Congratulations, Rachel!