On the heartbreak diet? Jennifer Garner looks very slender as she takes children to a party... while STILL wearing wedding ring

It seems Jennifer Garner may be on the heartbreak diet following her split from husband of 10 years Ben Affleck.

The 43-year-old looked very slender when she was spotted in Atlanta, Georgia on Sunday with her three children, during a morning off from filming Miracles From Heaven.

Jennifer was spotted picking up a bunch of colourful paw-printed balloons at a pet store, along with a couple of other items, suggesting they may have been gifts for a furry friend.

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Heading to a party?: Newly single Jennifer Garner was spotted picking up balloons with her children in Atlanta, Georgia on Sunday morning. She is seen here with son Samuel

Heading to a party?: Newly single Jennifer Garner was spotted picking up balloons with her children in Atlanta, Georgia on Sunday morning. She is seen here with son Samuel

Still on: The actress was wearing her wedding ring

Still on: The actress was wearing her wedding ring

The actress, who appeared to be heading to a party with her youngsters, was still wearing her wedding ring - she is yet to remove it since she and Ben announced their plans to divorce last month.

While Ben has alternated between having his ring on and off, it has been claimed that the former couple are making the effort to keep sporting the bands for the sake of their three children.

'The kids are a big part of why they're still wearing them,' a source told People.

Despite her very slim frame, Jennifer appears on good form despite the recent break-up, and was in a cheerful mood as she left the pet store with a smile on her face.

The Dallas Buyers Club star was clad in a black dress, leaving her legs on show, and kept her feet comfortable in flat silver sandals. 

Has she been on the hearbreak diet?: Jennifer is looking very slender in the wake of her split from Ben AffleckHas she been on the hearbreak diet?: Jennifer is looking very slender in the wake of her split from Ben Affleck
Has she been on the hearbreak diet?: Jennifer is looking very slender in the wake of her split from Ben Affleck

Has she been on the hearbreak diet?: Jennifer is looking very slender in the wake of her split from Ben Affleck

Work a cool vibe this summer in Jennifer's Birkenstock sandals

We've said it a million times and we'll say it again, Birkenstocks are en vogue.

The cult classic Birkenstock has now evolved into a thong sandal, and they’re just as much of a guilty pleasure as the original double strap versions. We love ‘em.

Whether you’re working a cool and mysterious all black minimalist look like Jennifer or just out and about on vacation in a T-shirt and shorts, you can wear these trendy sandals any way you wish and they’ll still put a cool edge on any daytime look. They’re the sandals of the year!

These German originated sandals should be on the top of your vacation wish list – no shoe will serve you better.

And you have no excuse to pass these bad boys up as they’re available to buy from the Zappos website for a very doable $99.95. Go!

* PRICES MAY NOT BE AS ADVERTISED
Dressed down: The 43-year-old was casually clad in a black dress and silver flat sandals

Dressed down: The 43-year-old was casually clad in a black dress and silver flat sandals

Leading the way: Violet, nine, marched ahead to pick up some items at the shop with her mom and siblings

Leading the way: Violet, nine, marched ahead to pick up some items at the shop with her mom and siblings

Jennifer appeared to be make-up free under her large sunglasses, and wore her light brown hair down and poker straight. 

Little Samuel, three, was dressed in a Spiderman costume, while nine-year-old Violet and six-year-old Seraphina dressed in casual T-shirts and summery shorts and skirts. 

Jennifer has been been keeping busy on set and off, making time when she isn't shooting scenes to entertain her children, who are spending the summer in Atlanta with her.

Batman v... Spiderman: Cute little Samuel wore a superhero costume for the occasion

Batman v... Spiderman: Cute little Samuel wore a superhero costume for the occasion

Helping hand: Violet assisted her actress mother in carrying some of their purchases and loading up the car 

Helping hand: Violet assisted her actress mother in carrying some of their purchases and loading up the car 

Sleepy: Jennifer was also joined by a friend, who carried Samuel as he rested his head on her shoulder

Sleepy: Jennifer was also joined by a friend, who carried Samuel as he rested his head on her shoulder

Ben spent some time there too, to be close to the children while Jennifer is filming her latest movie.

In the film version of bestselling memoir Miracles From Heaven, Garner plays a loving mother and wife whose daughter says she 'met' Jesus in heaven after a near-death experience.

After the girl makes a remarkable recovery, the family is touched by a series of miracles in the inspirational Christian drama.

Keeping cheerful: Despite her recent break-up, Jennifer was in a good mood, and had a smile on her face
Keeping cheerful: Despite her recent break-up, Jennifer was in a good mood, and had a smile on her face

Keeping cheerful: Despite her recent break-up, Jennifer was in a good mood, and had a smile on her face

Who is that for?: The star picked up colourful paw-printed balloons and a few other items from a pet store

Who is that for?: The star picked up colourful paw-printed balloons and a few other items from a pet store

A day off: Jennifer was enjoying a break from filming her latest movie, Miracles From Heaven

A day off: Jennifer was enjoying a break from filming her latest movie, Miracles From Heaven

Fuss-free: Jennifer didn't wear any make-up under her designer sunglasses, and left her hair down

Fuss-free: Jennifer didn't wear any make-up under her designer sunglasses, and left her hair down

Ben has been back at work too, promoting Batman v Superman: Dawn Of Justice at Comic-Con last week.

'After much thought and careful consideration, we have made the difficult decision to divorce,' the couple confirmed to DailyMail.com in a joint statement on June 30, a day after their 10th wedding anniversary.

'We go forward with love and friendship for one another and a commitment to co-parenting our children whose privacy we ask to be respected during this difficult time. This will be our only comment on this private, family matter. Thank you for understanding.' 

Family matters: The former couple's three children Violet, Seraphina and Samuel have been staying with Jen while she is filming, and Ben has been visiting

Family matters: The former couple's three children Violet, Seraphina and Samuel have been staying with Jen while she is filming, and Ben has been visiting

Doing it for the kids: Ben (seen at the ESPYs on Wednesday) and Jennifer have allegedly been wearing their wedding rings for the sake of their children

Doing it for the kids: Ben (seen at the ESPYs on Wednesday) and Jennifer have allegedly been wearing their wedding rings for the sake of their children

Slender star: Jennifer, who was already very slim, appears to have lost even more weight since her split from Ben. She is pictured here in March

Slender star: Jennifer, who was already very slim, appears to have lost even more weight since her split from Ben. She is pictured here in March

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