Pregnant!Supermodel Bar Refaeli Is Expecting Her First Baby!

Supermodel Bar Refaeli announced she expecting her first child with this positive pregnancy test pic posted December 31, 2015 on her Instagram account.

Kellie Martin: October 2015

The 39-year-old Clarissa Explains It All star shared this sweet Halloween-themed baby bump on Instagram on Oct. 1.

Click through to see more celebs who announced their pregnancies via social media! —>

Kristin Cavallari: May 2015

“Big News. We’re at it again! Thrilled to announce baby number 3 is on the way! The cutler crew just keeps on growin’!”

The former star of The Hills and her NFL quarterback hubby — who are already parents to sons Camden, 2, and Jaxon, 15 months — are expecting a girl.

Vanessa Carlton: June 2014

Last year, the "A Thousand Miles" singer announced she was pregnant and expecting a child with husband John McCauley — and she did so on social media.

In a Facebook post, along with an image of her growing tummy, the "Ordinary Day" singer revealed, "No, those aren't a bunch of croissants. We're expecting a baby. It’s healthy and moving around like a champ."

They welcomed a daughter earlier this year.

Kelly Rowland: June 2014

The "Motivation" hitmaker confirmed the happy news via Instagram by posting the a picture of her new husband Tim Witherspoon's sports shoes alongside a matching baby pair, with the caption, "I'll be stuntin like my daddy… (sic)."

She welcomed son Titan in November 2014.

Kelly Clarkson: November 2013

Shortly after marrying Brandon Blackstock in October 2013, the American Idol champ revealed their baby news! "I'm pregnant!!! Brandon and I are so excited! Best early Christmas present ever :)," she tweeted sans pic.

Kendra Wilkinson: October 2013

Happy Halloween! "Round two. Here we go!!" the reality star wrote under a smiley snapshot of herself holding a pregnancy test that read, "pregnant." Kendra and hubby Hank Baskett welcomed daughter Alijah on May 16, 2014, which made five-year-old son Hank Jr. a big brother!

Fergie: February 2013

"Josh & Me & BABY makes three!!! #mylovelybabybump," the songstress wrote. The pic featured a childhood photo of herself and a childhood photo of husband Josh Duhamel photoshopped together. Son Axl Jack was born Aug. 29, 2013.

Jessica Simpson: December 2012

Nearly eight months after giving birth to daughter Maxwell, Jess confirmed she was pregnant with her second child with now-husband Erin Johnson during a Christmas vacation in Hawaii. She sat Maxi in the sand and wrote "BIG SIS" in front of her. Son Ace was born in June 2013.

Busy Philipps: December 2012

How did the Cougar Town star announce her second pregnancy? By posting a photo of a pregnancy test with the caption, "So this happened…" Birdie Leigh, 6, became a big sister to little lady Cricket Pearl in July 2013.

Tori Spelling: April 2011

“I know there’s been a lot of speculation, so I wanted everyone to hear from me… Its official…Dean [McDermott] & I are PREGNANT!!!!” she announced on Twitter without a photo. The couple became parents for the third time to daughter Hattie the following October. They had a fourth child, son Finn, in August 2012.

Jessica Alba: February 2011

Taking it to Facebook! “It’s been a while since I’ve been on FB & I thought I’d drop by to let you all in on some exciting news. Honor is going to be a Big Sister! Cash [Warren] and I are thrilled and wanted to share the news directly with you so you didn’t hear about it somewhere else. I appreciated all of the love and support you all gave me during my first pregnancy and will definitely appreciate it again this time around. Have a great day!” wrote the actress, who welcomed second daughter Haven later that year.

Rachel Zoe: November 2010

"Hey everyone! I want to officially confirm to my loyal friends and followers that I am pregnant!…" the fashion stylist announced on Twitter without a pic. She and husband Rodger Berman welcomed son Skyler in March 2011. Their second son, Kaius, arrived in December 2013.