Published: 07:05 EDT, 10 October 2017 | Updated: 15:38 EDT, 10 October 2017>
It was reported last week that their relationship is firmly back and track after they celebrated her birthday together.
And now Hilary Duff, 30, enjoyed some quality time with her musician beau Matthew Koma, also 30, as they stepped out together in Studio City in Los Angeles on Monday.
The former Disney star channelled a low-key look for the outing, slipping into a pair of charcoal skinny denims as they grabbed a coffee together.
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Stepping out: Hilary Duff, 30, enjoyed some quality time with her musician beau Matthew Koma, also 30, as they stepped out together in Studio City in Los Angeles on Monday
She teamed her pin-hugging jeans with a loose-fitting black jumper which featured British rock band Joy Division's name and logo across the front in white.
The mother-of-one navigated the pavement in her leather sliders while carrying her iced coffee and mustard-coloured notepad in her manicured hand.
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The So Yesterday hitmaker worked her trademark blonde locks into a sleek chignon while she shielded her eyes from the Californian sun in a pair of stylish aviators.
Completing her daytime look, she draped a wine-coloured tote over her shoulder which featured silver chain detail and complemented her statement watch.
MailOnline have contacted Hilary Duff's reps for comment.
Denim days: The former Disney star channelled a low-key look for the outing, slipping into a pair of charcoal skinny denims as they grabbed a coffee together
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Hilary Duff has a bag collection that most women would die for. Like us, it seems that designer arm candy seems to be her weakness.
From Saint Laurent to Chloe and Celine-- she's got an iconic piece from just about every heavy hitter. But today's selection hails from Givenchy--this burgundy beauty has just been added to the line for Fall and its a delightful deviation from the label's ubiquitous Antigona bag.
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Complementing the American beauty, Matthew donned a black denim jacket, purple tee and joggers which highlighted his socks and matching trainers.
Their appearance together comes after the pair - who broke up in March - celebrated her 30th birthday together at the end of September.
And reflection on her celebrations, they each posted a throwback Instagram photo of the two of them together at her party last week.
Following the social media posts, E! News revealed that an insider confirmed to them that the pair were seeing each other again.
Celebrations: Their appearance together comes after the pair - who broke up in March - celebrated her 30th birthday together at the end of September
A source told the publication: 'Since Matt got back from tour, they've been seeing each other again.'
'Him being gone on tour was the main reason things didn't work out the first time around so now that he's back they picked up right where they left off.'
In the meantime, Hilary was photographed this August passionately kissing businessman Ely Sandvik, whom she was then reportedly dating.
A different insider said Matthew 'took her on a romantic dinner date for her birthday, bought her a guitar, and was at her 30th birthday party. Her and Ely's split is very recent.
Mugging: On Thursday, Hilary herself posted an Instagram album detailing her birthday party, including a photo of her and Matthew
'Her friends and family really adore Matthew. Hilary also wants to get in the studio with Matthew and they have had a working relationship.'
Hilary had, on Thursday, uploaded an Instagram album that included a photo of her and Matthew mugging for the camera.
She has a perturbed look on her face as she rests her chin on one hand, and he stares pensively off while draped in what looks like a fuzzy shawl.
Another photo sees Hilary flanked by her elder sister Haylie Duff and their mother Susan Duff, the trio beaming for the cameras.
Family event: Another photo sees Hilary flanked by her elder sister Haylie Duff and their mother Susan Duff, the trio beaming for the cameras
The album also includes a Boomerang that shows Hilary blowing at the sparkler candles on her cake. Behind her, her name and new age are up in lights over a DJ booth manned by two people.
Other photos in the album show Hilary and Susan lifting each other off the ground, as well as Hliary hobnobbing with her pals.
One photo offers a wide view of what was apparently her backyard.
It had been transformed for her party to include such features as a dance floor, balloons and strings of hung-up lights.
Her name up in lights: The album also includes a Boomerang that shows Hilary blowing at the sparkler candles on her cake
Support: Other photos in the album show Hilary and Susan lifting each other off the ground
Hilary captioned the album: '#tbt to my most favorite birthday ever!!! #thisis30'.
Meanwhile, Matthew posted just one photo of the birthday party. It showed him and Hilary smiling warmly at each other.
He sweetly captioned the post: '#tBt birthday girl'.
Hilary was married from 2010 until last year to onetime hockey player Mike Comrie, by whom she has a five-year-old son called Luca.
'#tbt to my most favorite birthday ever!!!': One photo offers a wide view of what was apparently her backyard, transformed for her party
Mingling: Hilary was seen in her album hobnobbing with her party guests
Mother and child: Hilary was married from 2010 until last year to onetime hockey player Mike Comrie, by whom she has a five-year-old son called Luca
Source : http://www.dailymail.co.uk/tvshowbiz/article-4965926/Hilary-Duff-spotted-former-flame-Matthew-Koma-LA.html