Pregnant Hailey Bieber Shows Off Growing Baby Bump in Cute Mirror Selfie

Hailey Baldwin Bieber is like, "Baby, baby, baby, oh!”

The model and beauty mogul, 27, is expecting her first baby with husband Justin Bieber — and she recently gave her followers another glimpse at her growing bump!

On Friday, June 7, Hailey posted a mirror selfie to Instagram Stories, showcasing both her stylish outfit and her stomach.

The Rhode founder kept things casual for the picture, pairing baggy black trousers with a slightly cropped, striped shirt, which exposed a sliver of her burgeoning belly.

She also accessorized the look in a quintessentially Hailey way — rocking a black leather shoulder bag, matching sunnies and, of course, one of Rhode’s viral, lippie-holding phone cases.

The latest baby bump mirror pic — which has become a pregnancy staple for the model — comes after Hailey revealed more details about her and Justin’s pregnancy timeline.

On June 3, the star shared photos of her latest campaign with Yves Saint Laurent, and revealed that when she shot with the brand, she had already been carrying her and the singer’s child for a while.

"Shot this 4 months preggy with little bean in my belly,” she wrote.

The Rhode founder and her musician beau, 30, first confirmed that they were expecting their first baby together on May 9.

Hailey and Justin announced the news with Instagram posts that included footage from the couple's vow renewal ceremony, in which the model's bump was visible beneath her long, lacy white dress.

At the time, a rep for Hailey confirmed to PEOPLE that the model was just over six months pregnant.

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from juicy celebrity news to compelling human interest stories.

Following the big reveal, a source shared a glimpse into Hailey and Justin’s early reactions to the news — and told PEOPLE the pair wanted to keep it private for as long as possible.

"When they found out that Hailey was pregnant, it was just the best day for them,” the insider told PEOPLE. “They have both been very emotional about it. They feel so blessed. They've also felt very protective of the baby from the moment they found out."

"They shared with family and close friends early on. It was important for them to keep it quiet and just enjoy for as long as possible before they publicly confirmed though," the source continued, adding that “they asked their friends to not share until they were ready to announce."