Hilaria Baldwin poses in a bra and no pants in racy baby bump pic

Hilaria Baldwin is leaving little to the imagination as she marks a pregnancy milestone. 

Alec Baldwin's wife took to Instagram on Friday to share a new pic of her baby bump to celebrate hitting six months -- but it was her lack of pants (or underwear) that caught fans' attention. 

"6 months with Baldwinito #4! I have to remind myself every day how working out and eating well while pregnant will mean that I will have a easier pregnancy, delivery, and recovery," Hilaria captioned the pic. "I let myself slow down, but try to do an activity almost every day where I keep my circulation going, maintain flexibility, and tone muscles."

"I’m also completely at peace with the fact that I WILL gain weight, cellulite WILL happen, my body NEEDS fat and rest in order to grow a healthy baby. Through 4 pregnancies, I have found balance and calm—embracing natural changes in my body, yet taking care of myself in a way where these changes are temporary, and once the baby is out, I will find my non pregnant self again," she continued. "Please talk to me and to each other about your experiences with this, questions, and advice—no negativity—this is a namaste place💛. #WeGotThis2018." 

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Celebrities show off their baby bumps in bikinis, lingerie
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Celebrities show off their baby bumps in bikinis, lingerie
Embracing these curves and loving every bit of it! #pregnancy Suit- #ofuure 📷- @coryhardrict
Enjoying this warm weather in my @frankiesbikinis 🐣
6 months with Baldwinito #4! I have to remind myself every day how working out and eating well while pregnant will mean that I will have a easier pregnancy, delivery, and recovery. I let myself slow down, but try to do an activity almost every day where I keep my circulation going, maintain flexibility, and tone muscles. I’m also completely at peace with the fact that I WILL gain weight, cellulite WILL happen, my body NEEDS fat and rest in order to grow a healthy baby. Through 4 pregnancies, I have found balance and calm—embracing natural changes in my body, yet taking care of myself in a way where these changes are temporary, and once the baby is out, I will find my non pregnant self again. Please talk to me and to each other about your experiences with this, questions, and advice—no negativity—this is a namaste place💛. #WeGotThis2018 (in full disclosure, there is no filter, but I did brighten up the image a bit, since the bathroom in this hotel doesn’t have strong light).
SO EXTRA 🌹🌹🌹
Getting the Tum in the the sun 🌞👙🌞👙
Coki beach & the people were so good to us! 🐠 needless to say, the kids are so happy & tired out 💙
Babymooning and pretending my blended lemonade is a margarita 🌴👶🏼🌙🍹
Join me today on #BumpDay to ask Congress to pass the #ReachAct so all moms have healthy pregnancies. Link in bio. @savethechildren #bumpbumpbumpitupppp
Coming soon... A baby 😜 & My swimwear collection BAR for @hoodiesil
Happy day of birth to my son, my whole heart ❤️
So far so good 🌙 👶🏼👣
SUPER TUESDAY!! Every single man and woman living in AK, AR, CO, GA, MASS, MN, OK, TN, TX, VT, VA go out and vote today!!! Do your research. Use your voice!! This is an incredible time for change ,don't miss your chance to be a part of it!! I want a better future for my growing family and for us all!! #feelthebern #berniesanders #votetogether #supertuesday 📷 by @uglyhippie
🌎💧🙏🏻
Matching baby bumps. ✌️
@bowie82 and I enjoying some time at the pool before celebrating @samanthapatridge 21st!!!!
Bikini Body by Baby.
For the first time in my life I feel completely comfortable in a bikini. I never thought I'd feel this way about my body while pregnant. Wrote all about my new love for myself, my growing belly, and my baby on www.AliLuvs.com || www.liketk.it/2eIdC #pregnant #pregnancyglow #pregnancy
No one else will ever know the strength of my love for you. After all, you're the only one who knows what my heart sounds like from the inside. 👶🏽
I know I promised I would do this every two weeks, but as third time around (in three years and the fact that I was pregnant with Rafa like 5 min ago 😂), I kind of just looked super pregnant right away. Then there wasn't much change until now when this little boy is really growing in size. These posts are about embracing the pregnant figure, appreciating our bodies while we go through such tremendous transformation, and accepting that we don't need to be a teeny tiny size in order to feel beautiful. Because it's all about feeling. Never showing more than you would see in a bikini on the beach, I hope that you all stay kind here. I pixilated the products because this is not an advertisement...it's about an unphotoshopped quick snap showing my little munchkin grow 💙 #BaldwinBabyBump3 #366daysoflivingclearly #HilariaLCM
Happy 2016 to my beautiful Instafriends! So, posting a bikini pic is a little out of character for me, but just now while I was at the beach I noticed I was being photographed. I figure if this kind of photo is going to be out in the world it should at least be an image that makes me happy (and be one that was taken with my consent. And with a filter :) Wishing you love, light and blessings for the year ahead! ⚡️🦄Annie🦄⚡️
Not vogue thailand 😂
My Not so little boy 👶🏼💙
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Alec and Hilaria announced they were expecting their fourth child together in November, and one day later revealed they will be having another baby boy. The couple are already parents to daughter Carmen, 4, and sons Rafael, 2, and Leonardo, 1. Alec also shares 22-year-old daughter Ireland with his ex, Kim Basinger. 

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