Gigi Hadid shows off her taut tummy in a black crop top as she steps out for lunch with beau Joe Jonas in NYC

Her gal pal Karlie Kloss confirmed the two were an item via Instagram about two weeks ago.

And Gigi Hadid and Joe Jonas' relationship only appears to be heating up, as the two were spotted together again on Saturday.

The 20-year-old model showed Joe is one lucky man, as she put her taut tummy on display in a black crop top while venturing out in New York City's East Village.

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Going strong: Gigi Hadid and Joe Jonas were spotted together in New York City's East Village on Saturday

Going strong: Gigi Hadid and Joe Jonas were spotted together in New York City's East Village on Saturday

Step out in casual khaki's like Gigi

Gigi got some wear from these casual khaki cargos she was snapped in on Saturday. Early in the day, she wore them with these snakeskin booties, a simple white shirt and white shades.

Here, they did double duty for an afternoon date with Joe Jonas in the East Village in New York City. Later, at a Taylor Swift concert, she changed out of the ankle boots and into black strappy stilettos proving you can dress these babies up, too, no problem.

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The Sports Illustrated Swimsuit Issue stunner looked city chic, teaming her midriff-baring blouse with a pair of army green ankle-length skinnies and long, loose-fitted short-sleeved sweater vest.

The blonde beauty was also wearing white, black, and cream snakeskin booties while carrying around an embossed black Birkin bag.

Gigi's eyes were concealed with Finlay & Co. 'Thurloe Walnut' sunglasses, and her thick tresses flowed straight down.

Stylish as ever: Gigi looked incredible in her stomach-baring top and cool khaki trousers as she headed out for the evening 

Stylish as ever: Gigi looked incredible in her stomach-baring top and cool khaki trousers as she headed out for the evening 

Coordinating couple: The twosome matched by wearing black garments 

Coordinating couple: The twosome matched by wearing black garments 

Fit and fabulous: The blonde beauty shielded her eyes with Finlay & Co. 'Thurloe Walnut' sunglasses

Fit and fabulous: The blonde beauty shielded her eyes with Finlay & Co. 'Thurloe Walnut' sunglasses

Modest: The model maintained her modesty by layering her crop top with a long vest cardigan

Modest: The model maintained her modesty by layering her crop top with a long vest cardigan

Budding romance: The two have been spotted together multiple times in the last few months
Budding romance: The two have been spotted together multiple times in the last few months

Budding romance: The two have been spotted together multiple times in the last few months

The Jonas Brother was rather dressed up for the summer weather, clad in a long-sleeved black blouse which he layered with a grey button-down.

The musician-turned-restaurateur teamed his tops with slim-fit black trousers and fancy black trainers.

The scruffy-faced star also concealed his eyes with black shades.

Stunning: The 20-year-old star made the most of her slender figure in her revealing ensemble 

Stunning: The 20-year-old star made the most of her slender figure in her revealing ensemble 

Windswept: The model's blonde mane got in the way as she headed off to see her pal Taylor in concert
Windswept: The model's blonde mane got in the way as she headed off to see her pal Taylor in concert

Windswept: The model's blonde mane got in the way as she headed off to see her pal Taylor in concert 

Funky footwear: Gigi set off her look with fashionable snakeskin ankle boots, featuring a metallic heel

Funky footwear: Gigi set off her look with fashionable snakeskin ankle boots, featuring a metallic heel

On-trend: The star also donned a loose black, sleeveless jacket, the perfect summer cover-up

On-trend: The star also donned a loose black, sleeveless jacket, the perfect summer cover-up

Simple touches: Gigi accessorised with a simple silver necklace and a leather handbag

Simple touches: Gigi accessorised with a simple silver necklace and a leather handbag

Joe's younger - and newly single - brother Nick Jonas appeared to tag along for the 

The trio were headed towards Taylor Swift's second concert at the MetLife Stadium in New Jersey.

Just the night before, Gigi joined her BFF on stage during the first night at the Jersey location.

The award-winning artist has been enlisting the help of her famous female friends for her 1989 tour.

TSwift's gal pals have been joining her on stage during her performances of her hit single, Bad Blood.

Three's company; Joe's little brother Nick, 22, joined the couple

Three's company; Joe's little brother Nick, 22, joined the couple

Newly single: Nick recently split from his girlfriend Olivia Culpo

Newly single: Nick recently split from his girlfriend Olivia Culpo

Girl power: Taylor Swift brought Gigi, Hailee Steinfeld, Lily Aldridge, and Lena Dunham on stage with her during her 1989 World Tour at the MetLife Stadium in New Jersey on Friday

Girl power: Taylor Swift brought Gigi, Hailee Steinfeld, Lily Aldridge, and Lena Dunham on stage with her during her 1989 World Tour at the MetLife Stadium in New Jersey on Friday

Meanwhile, Gigi and Joe celebrated the Fourth Of July together last weekend - which the daughter of Real Housewives Of Beverly Hills' Yolanda Foster documented on Social Media.

'7/3,' she wrote with a snap of the pair dressed in color-coordinated attire for the Patriotic weekend.

Prior to that, Victoria's Secret model Karlie Kloss shared a snap of herself alongside the two and other lovebirds Taylor Swift and Calvin Harris.

'That moment when you realize you're the 5th wheel on a romantic double date river cruise....' she wrote, confirming the relationship rumours surrounding Joe and Gigi.

In May, Joe had claimed he was a 'single man' while speaking with Access Hollywood, but that doesn't currently seem to be the case.

7/3

A photo posted by Gigi Hadid (@gigihadid) on

Old flame: Gigi previously dated Cody Simpson - the two are pictured here on April 10 

Old flame: Gigi previously dated Cody Simpson - the two are pictured here on April 10 

The same month, Gigi and her on-off boyfriend, Australian pop star Cody Simpson, split once again.

Though, the two have said they are on amicable turns, and Gigi even took to Twitter on Friday to congratulate her 18-year-old ex on his new album, Free.

'Congrats to @CodySimpson and @MrCISCOADLER on sharing Free with the worrllddd! Vibin #GetFree,' she tweeted. 

Group outing: Earlier in the day, Gigi and Joe headed out with their pal Leah McCarthy and a male friend

Group outing: Earlier in the day, Gigi and Joe headed out with their pal Leah McCarthy and a male friend

Daytime dressing: Gigi swapped her black crop top in favour of a simple white T-shirt 

Daytime dressing: Gigi swapped her black crop top in favour of a simple white T-shirt 

Specs appeal: She added a pair of white-rimmed sunglasses and a brown handbag to her casual look

Specs appeal: She added a pair of white-rimmed sunglasses and a brown handbag to her casual look

New romance: Gigi has moved on after splitting with her on-off boyfriend, Australian pop star Cody Simpson
New romance: Gigi has moved on after splitting with her on-off boyfriend, Australian pop star Cody Simpson

New romance: Gigi has moved on after splitting with her on-off boyfriend, Australian pop star Cody Simpson

Earlier in the day, Gigi and Nick were spotted on a casual outing earlier in the day with their pal Leah McCarthy and a male friend.

Gigi was rocking the same khaki trousers and stylish ankle boots, but her look was altogether more casual for the daytime.

She was wearing a white, stomach-baring top and a brown handbag, while Joe was sporting jeans and a T-shirt emblazoned with Karl Lagerfeld's face.

Her main man: Joe and Gigi's relationship seems to be going from strength-to-strength 

Her main man: Joe and Gigi's relationship seems to be going from strength-to-strength 

Casual: The Camp Rock actor was sporting a T-shirt bearing designer Karl Lagerfeld's face

Casual: The Camp Rock actor was sporting a T-shirt bearing designer Karl Lagerfeld's face

Jetting off: Gigi, Joe and Nick Jonas were seen taking a helicopter from a New York heliport 

Jetting off: Gigi, Joe and Nick Jonas were seen taking a helicopter from a New York heliport 

Nice to meet you! The gang were given a warm welcome as they boarded the vehicle 

Nice to meet you! The gang were given a warm welcome as they boarded the vehicle 

Inseparable: Joe and Gigi have rarely been apart since they were first linked romantically 

Inseparable: Joe and Gigi have rarely been apart since they were first linked romantically 

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