"Surprise! 🍼🌈👼," the 26-year-old captioned a couple of photos of herself showing off her growing stomach. In the snaps, the "Without You" songstress wore a rainbow crop top with jeans, and then in the other photos, she was topless.
January Jones exclaimed, “Whaaaaaaaaaaattt??? Congratulations Momma!! You’re gonna love it!!”
The brunette babe didn't say who the father of her child is, but she tagged Alev Aydin on her baby bump. For his part, the screenwriter appeared to confirm the news, re-posting Halsey’s photo on his Instagram Story with two heart emojis.
“For a long time, I didn't think that having a family was something I was going to be able to do, and it's very, very important to me,” she previously said.
"Then one day my OB-GYN tells me it's looking like I maybe can, and I was so moved. It felt like this ascension into a different kind of womanhood," she added. "All of a sudden, everything is different. I'm not going to go tour myself to death because I have nothing else to do and I'm overcompensating for not being able to have this other thing that I really want. Now, I have a choice. I've never had a choice before."
Ultimately, it looks like things ended up working out for the musical artist.