Sunkissed Heidi Klum, 42, shows off her glow in a floaty sleeveless dress as she joins beau Vito Schnabel, 29, for lunch date in Milan

They've been inseparable since they were first linked in March last year.

And Heidi Klum, 42, and Vito Schnabel, 29, certainly seemed comfortable together as they stepped out for a relaxed lunch date in Milan; a break from the hectic schedule of Fashion Week.

Clad in a simple summer dress, the Project Runway star seemed in high spirits as she followed her art dealer boyfriend out of a restaurant in the Italian city.

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Monochrome maven: Heidi Klum looked effortlessly stylish as she stepped out for a lunch date with her art dealer beau Vito Schnabel in Milan

Monochrome maven: Heidi Klum looked effortlessly stylish as she stepped out for a lunch date with her art dealer beau Vito Schnabel in Milan

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Heidi Klum and Vito Schnabel stepped out in Milan looking the picture of casual chic. Heidi, especially, looked effortlessly cool and comfortable.

She paired a simple black cotton high/low tank dress with a pair of sunglasses and a cross-body bag. But all eyes are on her shoes which, although they LOOK casual, are anything but. The lace-up detailing, the mixture of materials, especially suede and python, is the stuff that ratchets up the luxe factor.

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The blonde beauty more than showed off her fashion credentials in a breezy black midi dress that effortlessly billowed around her svelte frame.

She topped off the easy daytime look with sexy lace-up booties, a cross-body bag and sleek sunnies.

The supermodel allowed her sunkissed glow to do all the talking and appeared to keep her pretty features make-up free, scraping her silky blonde tresses into an low-fuss topknot.

Her beau Vito looked similarly casual for the lunch date, opting for a simple navy T-shirt and chinos which he complemented with a pair of grey brogues.  

The blonde beauty - who is in Italy for Milan Fashion Week - more than showed off her fashion credentials in a breezy black dress that effortlessly billowed around her svelte frame

The blonde beauty - who is in Italy for Milan Fashion Week - more than showed off her fashion credentials in a breezy black dress that effortlessly billowed around her svelte frame

She topped off the easy daytime look with sexy lace-up booties, a cross-body bag and sleek sunnies, allowing her sunkissed glow to do all the talking

She topped off the easy daytime look with sexy lace-up booties, a cross-body bag and sleek sunnies, allowing her sunkissed glow to do all the talking

They may be a relatively new romance but Heidi and Vito have already been racking up the PDAs.

In August the genetically-blessed couple enjoyed a European vacation.

The pair were spotted wake-boarding off St. Tropez and seemed in high spirits as they rode a Vespa around Rome.

They also set tongues wagging with a passionate display as they kissed and cuddled on a secluded beach in Sardinia to mark Vito's 29th birthday in June.

Vito, who is the son of artist and film director Julian Schabel, is a New York based art curator and has been dating Heidi since last year. 

The supermodel appeared to keep her pretty features make-up free and scraped her silky blonde tresses into an unfussy topknot

The supermodel appeared to keep her pretty features make-up free and scraped her silky blonde tresses into an unfussy topknot

Heidi and Vito have been dating for a year and have already been spotted wake-boarding off St. Tropez, riding a Vespa around Rome and kissing on a secluded beach in Sardinia

Heidi and Vito have been dating for a year and have already been spotted wake-boarding off St. Tropez, riding a Vespa around Rome and kissing on a secluded beach in Sardinia

The supermodel is in Italy for Milan Fashion Week and stole the show in a sexy green mini dress as she attended the Versace Spring/Summer '16 show on Friday

The supermodel is in Italy for Milan Fashion Week and stole the show in a sexy green mini dress as she attended the Versace Spring/Summer '16 show on Friday

In between low-key lunch dates with her beau, Heidi has been keeping busy attending high profile fashion shows as part of Milan Fashion Week.

On Friday the supermodel made sure all eyes were on her at the star-studded Versace Spring/Summer '16 show - which model and It girl Gigi Hadid walked in.

The mother-of-four showcased her lithe frame in a green and black mini dress which she teamed with striking suede over-the-knee boots.

The all-black ensemble comprising of a breezy midi dress and suede booties was a stylish contrast to the green minidress she wore last night

The all-black ensemble comprising of a breezy midi dress and suede booties was a stylish contrast to the green minidress she wore last night

Meanwhile, the Project Runway host has some exciting new projects in the pipeline, revealing plans to unveil a new Heidi Klum Intimates collection for Macy's department store in April.

She said that her line of bras and panties give women 'the perfect boost' and a 'natural shape,' WWD reported at the time. 

The mother-of-four allowed her 5.25 million combined social media followers a generous glimpse of the bras and panties in a series of sexy videos posted to her Twitter and Instagram accounts that featured her dancing and posing seductively amid animated graphics to the sound of rock 'n roll music.

The Project Runway host shared a smile with onlookers as she headed into the restaurant in sunny Milan

The Project Runway host shared a smile with onlookers as she headed into the restaurant in sunny Milan

Heidi ensured all eyes were on her as she elegantly stepped out of a black car to head into the eatery

Heidi ensured all eyes were on her as she elegantly stepped out of a black car to head into the eatery

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