Hailey Bieber rang in her 28th birthday surrounded by some of her closest friends, including Kendall Jenner and Lori Harvey, with a martini-themed dinner party.

On Friday night, the model got all glammed up to celebrate in a very sexy all-black ensemble, which consisted of a fur-trimmed jacket, tiny shorts, tights and a pair of slingback heels.

She accessorized her chic look with a sparkly diamond choker, coordinating earrings and her golden blonde hair in a sleek half-up, half-down style.

The new mom, who welcomed her first child, son Jack Blues, with husband Justin Bieber, in late August, also sported a eye-catching manicure, featuring a martini olive design as a nod to her ‘a tini bit 28’ party theme.

The Rhode founder shared plenty of pictures from the evening to her Instagram Story as she documented the scene, desserts, drinks and time with friends.

In one image, she can be seen standing from the side as she held an espresso martini next to a table full of martinis, cakes and sugary doughnuts.

Hailey Bieber rang in her 28th birthday surrounded by some of her closest friends, including Kendall Jenner and Lori Harvey, with a martini-themed dinner party

Others showed her posing under a lit neon ‘Martini Bar’ sign inside a restaurant, before getting showered with love from her loved ones.

A sweet video on her Instagram Story showed Jenner, 29, presenting her longtime pal with a beautiful birthday cake.

Hailey and Justin announced her pregnancy in May, after sharing footage of their vow renewal ceremony they had in Hawaii – with her baby bump on full display.

Before giving birth, she spoke to W Magazine about morning sickness, her pregnancy diet and why she announced her baby joy when she did.

‘I probably could have hid it until the end. But I didn’t enjoy the stress of not being able to enjoy my pregnancy outwardly,’ she told W magazine.

‘I felt like I was hiding this big secret, and it didn’t feel good. I wanted the freedom to go out and live my life.’ the niece of Alec Baldwin explained.

‘I was honestly able to keep it quiet because I stayed small for a long time. I didn’t have a belly, really, until I was six months pregnant, which was when I announced it. I was able to wear big jackets and stuff,’ she noted.

On Friday night, the model got all glammed up to celebrate in a very sexy all-black ensemble, which consisted of a fur-trimmed jacket, tiny shorts, tights and a pair of slingback heels

Her Instagram was awash with pictures of her indulging in martinis that evening

Her sizzling outfit was on full display in her pictures, in which she showed off her shapely legs in a set of dark hose

Throwing a little variety into the mix, Hailey also enjoyed an espresso martini

Her social media also offered up a mouthwatering glimpse of her birthday cake

She accessorized her chic look with a sparkly diamond choker, coordinating earrings and her golden blonde hair in a sleek half-up, half-down style

Hailey seen with Lori Harvey (L)

Hailey also noted that in order to maintain her health, she has made sure to consume plenty of protein, including ‘lots of eggs, chicken, and steak.’

She also enjoys premade items from the Los Angeles health food store Erewhon – a favorite of celebrities – and the trendy beverage kombucha.

‘In the beginning [of pregnancy], it was super emotional for me. Like: “I love this human so much. How can I possibly bring someone else into this?” I’m trying to soak in these days of it being Justin and me, just the two of us,’ she said.

She also has to be careful about going online, as ‘the Internet is a scary place for a pregnant woman’ what with all the anecdotes floating around social media.

‘You see so many stories – traumatic birth stories, traumatic experiences – and I know that that’s very real. But I don’t want to scare myself,’ she said.

The new mom, who welcomed her first child, son Jack Blues, with husband Justin Bieber, in late August, also sported a eye-catching manicure, featuring a martini olive design as a nod to her ‘a tini bit 28’ party theme

In one image, she can be seen standing from the side as she held an espresso martini next to a table full of martinis, cakes and sugary doughnuts

Others showed her posing under a lit neon ‘Martini Bar’ sign inside a restaurant, before getting showered with love from her loved ones

A sweet video on her Instagram Story showed Jenner, 29, presenting her longtime pal with a beautiful birthday cake

Since welcoming her baby boy, she has shared only a small handful of photos of her newborn, including an adorable snap of from her family’s first Halloween together.

For Halloween, Hailey dressed up as Kim Possible while her husband Justin, 30, went as Ron Stoppable and their son Jack as Rufus.

Kim is the animated title character for the series Kim Possible, which is about a teen girl who has to save the world while dealing with growing up.

Neither Hailey or Justin have shared any photos of their little boy’s face.