Gigi Hadid shows off her toned tummy in a crop top as she has lunch with boyfriend Joe Jonas and her mother Yolanda Foster

Joe Jonas played the role of a good boyfriend admirably on Sunday, taking girlfriend Gigi Hadid and her mother, Yolanda Foster, out for lunch.

The 26-year-old singer even took the time to hold the door for the 20-year-old model.

Her 51-year-old reality star mother seemed comfortable with the youngsters as well.

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Lunch date: Joe Jonas (left) took girlfriend Gigi Hadid (right) out to lunch in West Hollywood on Sunday

Lunch date: Joe Jonas (left) took girlfriend Gigi Hadid (right) out to lunch in West Hollywood on Sunday

Blonde hair loose and falling wildly down her back, Gigi went with a casual look but still managed to bring a little stylish glamour.

Her shirt was a long-sleeved, black crop top that exposed a few inches of midriff above a pair of buff-coloured trousers.

White trainers and mirrored sunglasses completed the rising model's look.

Family affair: Gigi's mother, reality star Yolanda Foster, accompanied the young couple to the Vegan Glory restaurant

Family affair: Gigi's mother, reality star Yolanda Foster, accompanied the young couple to the Vegan Glory restaurant

Casual outing: Both Joe and Gigi stayed casual for their lunch - especially Joe, who wore a T-shirt and jeans

Casual outing: Both Joe and Gigi stayed casual for their lunch - especially Joe, who wore a T-shirt and jeans

Stylish: With her crop top and trousers, Gigi managed to be both casual and fashionable for the lunch

Stylish: With her crop top and trousers, Gigi managed to be both casual and fashionable for the lunch

Joe stuck with casual clothes as well, wearing a violet-hued T-shirt with charcoal jeans and trainers that matched.

As for Yolanda, the Real Housewives Of Beverly Hills star kept her look completely simple with a white T-shirt worn with comfortable grey leggings.

The laid-back look seemed very appropriate for a woman who has spent much of the last year dealing with health problems derived from Lyme disease and faulty implants.

Natural look: Unlike her glamorous style later in the day, Gigi had a fresh and makeup-free face for her lunch outing

Natural look: Unlike her glamorous style later in the day, Gigi had a fresh and makeup-free face for her lunch outing

Feeling better: The 51-year-old star of The Real Housewives Of Beverly Hills wore comfortable clothes but looked healthy after many months battling illness
Feeling better: The 51-year-old star of The Real Housewives Of Beverly Hills wore comfortable clothes but looked healthy after many months battling illness

Feeling better: The 51-year-old star of The Real Housewives Of Beverly Hills wore comfortable clothes but looked healthy after many months battling illness

Later on Sunday, Gigi left her casual clothes far behind in order to attend the 2015 MTV Video Music Awards.

Wearing a marigold gown with a deep V-neck and a high-slit skirt, Gigi took the stage twice during the night.

She first got the spotlight when she partnered with Miguel to introduce a performance by 21 Pilots and A$AP Rocky.

Big night: All of those casual clothes were gone later on the same day, when Gigi attended the MTV Video Music Awards to introduce 21 Pilots and A$AP Rocky with Miguel (left)

Big night: All of those casual clothes were gone later on the same day, when Gigi attended the MTV Video Music Awards to introduce 21 Pilots and A$AP Rocky with Miguel (left)

Make like Gigi in a yellow dress by Emilia Wickstead

No glam squad would be complete without Gigi Hadid, so it was hardly a surprise that she joined the likes of Karlie Kloss, Cara Delevingne, Lily Aldridge and Selena Gomez in supporting Taylor Swift at the VMAs.

And she certainly stood out from the crowd in this yellow dress! The model showed off her enviable figure and impossibly long legs in a dress by none other than Emilia Wickstead. We're more used to seeing the label on the likes of the Duchess of Cambridge, Pippa Middleton, and Poppy Delevingne, but Gigi is a gorgeous addition to the list.

We love the plunge neck, thigh split and jacquard texture of this dress, which would make a refreshing change from your favorite old LBD. But the best news? It's now available to buy in the sale! Click the link (right) to get it at MATCHESFASHION.COM, then complete the look with Gigi's strappy sandals by Giuseppe Zanotti (below).

Or take a look at the not so mellow yellow dresses we've found for you on the virtual high street. Boohoo, For Love & Lemons, Virgos Lounge and Asos have all got some delicious mustard dresses!

* PRICES MAY NOT BE AS ADVERTISED

Gigi headed back up to the stage at the end of the night, when Taylor Swift's Bad Blood won Video of the Year - the model was one of many famous women to appear in the futuristic video.

Proud mum Yolanda shared that winning moment on Instagram, writing: 'Congrats to the next generation of kind and magic young women that lead by example.'

Girl posse: Gigi made it back to the stage at the end of the night, when Taylor Swift won Video of the Year for Bad Blood - a video that Gigi and others starred in

Girl posse: Gigi made it back to the stage at the end of the night, when Taylor Swift won Video of the Year for Bad Blood - a video that Gigi and others starred in

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