Britney Spears Congratulates Sister Jamie Lynn on Her Second Pregnancy: 'So Happy For You'

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Britney Spears and Jamie Lynn Spears
Image Group LA/Disney Channel via Getty Images

There's a whole lot of love in the Spears family this Christmas!

Shortly after Jamie Lynn Spears announced that she was expecting her second child, Britney Spears took to social media to congratulate her little sister.

"Maddie is going to be the best big sister!!! So happy for you @jamielynnspears!!!! Love you all sooo much!!!💕," she commented while sharing Jamie Lynn's original tweet on Sunday.

As ET previously reported, Jamie Lynn is expecting her first child with husband Jamie Watson. The 26-year-old singer shared the good news via social media on Sunday, sharing a heartfelt message alongside a pic with her husband, Jamie Watson, and her 9-year-old daughter, Maddie, whom she shares with her ex-fiancé, Casey Aldridge.

View this post on Instagram

Looks like we are starting off 2018 with another big milestone...sooo happy to announce that Maddie is FINALLY going to be a big sister👶🏼2017 was filled with some of the biggest challenges of my life, as well as some of the biggest blessings, so I made a choice to lay low this year to focus on truly becoming my best self as a person and as an artist. During that time, I continued working on my music and telling my story, which has created some of my most honest work and I CANT wait to share that with you all very soon. 2018 is going to be filled with many milestones both personally and professionally. I appreciate each of you for your patience and support through it­ all. 2018 has a lot coming, so GET READY........ #12DaysofJLS

A post shared by Jamie Lynn Spears (@jamielynnspears) on

Britney knows a thing or two about raising two kids. She's mom to two sons with her ex-husband, Kevin Federline -- 12-year-old Sean and 11-year-old Jayden.

The 36-year-old pop star and her brood are getting into the holiday season as well. The "Toxic" singer shared a fun Boomerang of her son jumping into winter break in front of their very well decorated house.

Brit Brit also got political on Instagram over the weekend, which she isn't known to do very often. She posted a pic of herself rocking a T-shirt that read "We are all dreamers" -- and, yes, it also very much showed off her toned abs.

For more on the sisters, watch the video below.

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