Justin Bieber/instagram. inset:getty
On Wednesday, the "Peaches" singer, 27, raved about the 24-year-old model when he posted a picture of Baldwin rocking a green bikini on his Instagram Story. The steamy photo showed Baldwin smiling as she lifted up her arms, giving the camera a peek of her two-piece underneath a cropped grey sweatshirt.
"Sweet n sexy," Bieber wrote in the caption.
The image appeared to be taken during the couple's recent tropical vacation. Baldwin was seen rocking the same emerald swimsuit in a series of snapshots she posted to her Instagram on Monday.
Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday.
The slideshow also included a video of Baldwin dancing in the rain, as well as a picture of Bieber holding his wife in a tight embrace near a lagoon.
Bieber and Baldwin tied the knot in September 2018 at a New York City courthouse, just two months after getting engaged in the Bahamas that July. A year later, the two hosted a larger second wedding ceremony in front of family and friends.
Baldwin spoke about being referred to as "Justin's wife" during an appearance on 4D with Demi Lovato earlier this month, sharing that she doesn't mind the title because, as she put it, "where's the lie?"
"When you marry someone that is really well known, you also accept that a lot of the time people are going to be like, 'Oh yeah, that's blah, blah blah's wife.' It doesn't bother me," Baldwin told host Demi Lovato.
"At the end of the day, it doesn't bother me when somebody's like, 'Oh, you're Justin's wife.' I'm like, 'Yeah, I'm Justin's wife!' " she added.
During the conversation, Baldwin also addressed the rumors that the pop star "mistreats her."
"There's one big fat narrative that goes around that's like, 'Justin is not nice to her and he mistreats her.' It's so far from the truth. It's the complete and utter opposite. I really am lucky to say I'm with someone who is extremely respectful of me, who makes me feel special every single day," Baldwin said.
Watch: Justin Bieber's speech after winning artist of the year 2021