Hailey Bieber flashes toned frame two months after welcoming son Jack

Hailey Bieber was spotted leaving a Pilates classes on Tuesday morning in Los Angeles.

The 27-year-old new mom, who shares two-month-old son Jack Blues Bieber with 30-year-old husband Justin Bieber, showcased her post-baby body in charcoal hued biker shorts, a cream colored crop top and an oversized green jacket.

The stunner carried a large brown tote over one shoulder, keeping her look stylish from head to toe with her black loafers and white socks.

Her sighting comes one day after Hailey and Justin partied at Doja Cat's star-studded birthday party in LA.

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Justin Bieber parties with wife Hailey at Doja Cat's A-list birthday bash after Liam Payne tribute and Diddy drama

Hailey looked chic in a black bodysuit and trousers, adding an ankle-length leather duster coat and pointed thigh-high boots.

The Rhode Skincare founder added small framed sunglasses despite the night time party start time - as did husband Justin.

Justin matched his wife, opting to wear a black hoodie pulled over his head, a unique beanie, baggy nylon trousers and a furry coat. 

Their outing comes just two months after they welcomed their first child together, son Jack Blues Bieber. 

The lovebirds announced the birth of their son on August 23, posting a snap of their baby boy's foot - along with his name.

Justin had shared the image with the caption: 'Welcome home Jack Blues Bieber,' adding a teddy bear emoji.

The post has since garnered over 22 million likes. 

Days later, Hailey showed off a $2K diamond ring that said 'mom.'

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.

Over the weekend, Justin shared a somber video of floral tributes to the late Liam Payne, who died last week at age 31 after plunging from the third floor of his hotel in Buenos Aires.

The video had a voiceover that said: 'Just remember, you are allowed to grieve as a fan. You are allowed to love someone you've never met.'

The voiceover continued: 'You are allowed to admire someone for their art. You are allowed, to cry, to break, to feel like a part of you is gone.'

The pop stars had a chart rivalry that became a full fledged rivalry after Liam appeared to make a dig at Justin, however they worked it out and became friends.

Justin's one-time mentor Diddy is currently behind bars and will remain in custody pending trial amid a sex trafficking probe.

Diddy is 24 years older than Justin and videos of Justin - then aged 15 - have resurfaced online of Diddy documenting his '48 hours' staying with the singer. 

In the resurfaced clip, Diddy stands next to teen Justin and tells the camera: 'He's having 48 hours with Diddy, where we hanging out and what we're doing we can't really disclose.'

Diddy continued: 'But it's definitely a 15-year-old's dream. I have been given custody of him. He's signed to Usher and I had legal guardianship of him [Bieber] but for the next 48 hours he's with me and we're gonna go full crazy.'

In the clip, Justin can be seen smiling and looking up at Diddy as he spoke, adding comments like 'yeah' and 'full crazy.' 

In March, another resurfaced clip of teen Justin and Diddy appeared, shortly after Homeland Security raided Diddy's properties in Los Angeles and Miami.

Justin was 16 at the time, with Diddy grilling him on why he hasn't been speaking to him as much.

'What's up man, you good? Selling out arenas and everything?' Diddy asked the teen.

'Starting to act different, huh? You haven't been calling me and hanging out the way we used to hang out.'

Justin appeared anxious in the clip, telling him: 'I mean you tried to get in contact with me throughout all my... and what not... but you never got my number. I'm going to tell you my number.'

A source recently told DailyMail.com that Justin had been 'thrown' by the accusations against Diddy and 'is unwilling to process it or discuss it so he has shut off.'