Sprint and smile! Beaming Reese Witherspoon shows off her toned physique on a run with friends 

What some may consider as a daunting workout, this megastar appears to classify as fun.

Reese Witherspoon was spotted sporting a huge smile while out for a run in Los Angeles on Tuesday, clad in colorful capris and a loose-fitting black tank.

The 39-year-old actress, who was joined by a group of friends, wore blue-tinted shades and a baseball cap while working up a sweat.

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A smile on a sprint! Reese Witherspoon was spotted sporting a huge grin while out for a run in Los Angeles on Tuesday, clad in colorful capris and a loose-fitting black tank

A smile on a sprint! Reese Witherspoon was spotted sporting a huge grin while out for a run in Los Angeles on Tuesday, clad in colorful capris and a loose-fitting black tank

A make-up free Reese seemed to be enjoying the company and motivation of exercising as a group, despite having to catch her breath amid their conversation.

She opted for thick-souled sneakers to give her a little extra cushion, seeming to keep her comfort in mind while hitting the pavement.

Her bright blue sports bra peeked out of her top at times, also matching her vintage sunglasses.

The Hot Pursuit actress decided to keep on her wedding band, signifying her still strong relationship to her husband of four years, Jim Toth.

On the go: The 39-year-old actress, who was joined by a group of friends, wore blue-tinted shades and a baseball cap while working up a sweat

On the go: The 39-year-old actress, who was joined by a group of friends, wore blue-tinted shades and a baseball cap while working up a sweat

Stay shady in Reese's mirrored aviators

If there's one item to put on your summer wishlist this year it's a pair of mirrored lens aviators. We've spotted many of the celebs sporting these trendy sunglasses and Reese Witherspoon is the latest star to make us covet a pair for ourselves.

Reese's are a celeb favorite and original aviator brand Ray Ban, and you can buy her blue and gold mirrored style from the brand at RayBan.com (just click to the right to purchase). Although $170 may seem pricey, the popularity of Ray Ban speaks for itself and the quality is obvious. Besides when you think about cost per wear, you'll have these sunnies on all summer long (convinced yet?).

For more mirrored lens inspiration and to shop around before you buy check out the options below. AEO and Boohoo both have a super affordable take on the trend, while Matthew Williamson offers a very similar style. Wear with casual outfits like Reese's or with dressy pieces on holiday. This is one item that won't go out of fashion in a hurry!

* PRICES MAY NOT BE AS ADVERTISED
In the zone: A make-up free Reese seemed to be enjoying the company and motivation of exercising as a group, despite trying to catch her breath at times
In the zone: A make-up free Reese seemed to be enjoying the company and motivation of exercising as a group, despite trying to catch her breath at times

In the zone: A make-up free Reese seemed to be enjoying the company and motivation of exercising as a group, despite trying to catch her breath at times

Thinking ahead: She opted for thick-souled sneakers to give her a little extra cushion, seeming to keep her comfort in mind while hitting the pavement

Thinking ahead: She opted for thick-souled sneakers to give her a little extra cushion, seeming to keep her comfort in mind while hitting the pavement

Reese's cardio comes shortly after she celebrated the Labor Day weekend holiday aside actress Molly Sims for designer Mary Alice Haney's birthday in Malibu. 

For the ocean side bash, Witherspoon modeled two of her Draper James creations, the flirty 'Peach Dress', which features a cross-strap back. 

She later dressed in waist-cinching plaid frock which she paired with a statement red lip.

Outfit swap: Reese was later spotted in a summer chic ensemble which included tan heels as she ran errands and jewellery shopped in Beverly Hills
Outfit swap: Reese was later spotted in a summer chic ensemble which included tan heels as she ran errands and jewellery shopped in Beverly Hills

Outfit swap: Reese was later spotted in a summer chic ensemble which included tan heels as she ran errands and jewellery shopped in Beverly Hills 

Cool chick: The Southern belle accessorised with a brimmed hat and plastic-rimmed shades 

Cool chick: The Southern belle accessorised with a brimmed hat and plastic-rimmed shades 

Meanwhile, the former Las Vegas actress looked lovely in a side braid while showing off her svelte figure in a black dress with floral accents.

'Labor day fun,' 49-year-old Molly captioned the huddled close snap.

On Sunday, the Legally Blonde star took to Instagram to share a heart-warming video of her having a blast while playfully singing Banana Phone with her two-year-old son Tennessee.

Perking up: The blonde beauty also made a grocery and Starbucks run at Bristol Farms

Perking up: The blonde beauty also made a grocery and Starbucks run at Bristol Farms

She also has two other children - Ava, 16 and Deacon, 11 - with her former Cruel Intentions co-star Ryan Phillippe, who she was married to for seven years before splitting in 2006.  

Aside from her motherly duties, there are reports Reese will appear in Big Little Lies alongside Nicole Kidman as well as produce and star in a live-action Peter Pan spin-off called Tink.

The Oscar winner is also set to make an appearance in the social satire Downsizing, co-starring Matt Damon, Alec Baldwin, Jason Sudeikis and Neil Patrick Harris.

Famous friends: Reese's cardio comes shortly after she celebrated the Labor Day weekend holiday aside actress Molly Sims for designer Mary Alice Haney's birthday in Malibu

Famous friends: Reese's cardio comes shortly after she celebrated the Labor Day weekend holiday aside actress Molly Sims for designer Mary Alice Haney's birthday in Malibu

Red, white and blue! The mother-of-three modeled one of her Draper James designs, this waist-cinching plaid frock which she paired with a statement crimson lip color

Red, white and blue! The mother-of-three modeled one of her Draper James designs, this waist-cinching plaid frock which she paired with a statement crimson lip color

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