Kylie Jenner and Khloe Kardashian cradle their bare bumps

Now that Kylie Jenner has made her birth announcement, the flood gates have opened.

Khloe Jenner, 33, shared a sweet throwback picture of the two pregnant sisters cradling their bumps, along with a congratulations message .

She wrote: ‘My Sweet Kylie! What a magical ride it’s been! I’ll miss you bumping along with me. 

Always together: Khloe and Kylie are seen in 2015

‘Never in a million years did I think we would do this together but it’s been that much more special because of it. God is so great!! He had His plan all along! I love you little mama love big mama.’

The image came hours after Kylie made the shock announcement of her daughter’s arrival.

The Keeping Up With The Kardashians star took to Instagram on Sunday to announce she welcomed a daughter into the world with her partner Travis Scott on Thursday.

First glimpse: The make-up mogul shared the first glimpse of the child in YouTube video

The 20-year-old shared: ‘I’m sorry for keeping you in the dark through all the assumptions. I understand you’re used to me bringing you along on all my journeys. My pregnancy was one I chose not to do in front of the world.

‘I knew for myself I needed to prepare for this role of a lifetime in the most positive, stress free and health way I knew how. There was no gotcha moment, no big paid reveal I had planned. I knew my baby would feel every stress and every emotion so I chose to do it this way for my little life and our happiness.

 Happy mom: In her birth announcement Kylie wrote about how much she learned from pregnancy and even said she will miss it

Revealing: There was plenty of intimate footage shown including Kylie’s ultrasound

Showing: She proudly posed in the desert as she wore a clinging black dress to accentuate her changing body

‘Pregnancy has been the most beautiful, empowering and life changing experience I’ve had in my entire life and I’m actually going to miss it. I appreciate my friends and especially my family for helping me make this special moment as private as we could.

‘My beautiful and healthy baby girl arrived February 1st and I just couldn’t wait to share this blessing. I’ve never felt love and happiness like this I could burst. Thank you for understanding.’

The 20-year-old star also shared an 11 minute video montage on YouTube with clips from the last nine months as well as throwback videos from when her mother Kris Jenner welcomed her into the world and the bond she shares with her sisters – Kourtney Kardashian, Khloe Kardashian and Kendall Jenner. 

Big news: Kylie Jenner took to Instagram on Sunday to announce that she has given birth to a bouncing baby girl

‘Pregnancy has been life changing’: The 20-year-old reality star revealed that it was her choice to keep the entire process a secret as she thanked her friends and family for keeping it mum

Fun times: Kylie posed in front of a pink rose wall at her baby shower

Squad: Fellow partygoers matched the celebrant