Kim Kardashian to Kate Hudson: Stars and their favorite workout wear brands

When we workout, endorphins are released that make us happy, but what makes us even happier is getting to toss on an outfit we love for the occasion. It softens the blow of those challenging exercises and keeps us excited about working hard to stay fit. Some celebrities are even taking selfies of their stylish workout wear.

“Girls” actress Allison Williams was so excited to wear her new outfit from Outdoor Voices, a collaboration with fashion blogger Leandra Medine aka "Man Repeller," she snapped a photo of herself jumping rope in her kitchen and shared it with her 500,000 Instagram followers. We know we want to be that happy to workout.

Click any of the images below to view the full celeb-filled gallery:

Allison Williams showed excitement for her new workout gear Photo: Instagram/@aw

“It” model and blonde beauty Gigi Hadid can pull off just about anything, even wearing fitness clothes to hangout with famous friends in NYC's Soho neighborhood. Gigi was snapped by photographers walking with boyfriend and musician, Joe Jonas during the day wearing an edgy pair of cut-out plum leggings by the NY brand Michi proving workout gear can be fashionable too.

Recently retired runway model, Gisele Bundchen was a big part of revitalizing the activewear line Under Armour in their recent "I WILL WHAT I WANT" campaign. The model made the sports brand not only look fierce, but fashionable as well as she wore several of the company's classic looks.

Gisele makes Under Armour gear look fierce and fashionable Photo: Under Armour

Naturally, Kim Kardashian takes the cake in our star-studded workout round-up. The mom-to-be nails hat being fashionable while staying fit means. Keeping up with Kim K.’s fitness regime might be tough, but we would definitely be more inclined to try if we had this geometric cropped top and high-waisted leggings from Live the Process.

 Click the image below to scroll the entire gallery:

Photo: Instagram/@livetheprocess

When we work out, endorphins are released that make us happy, but what makes us even happier is getting to wear an outfit we love for the occasion. For some get-fit style inspiration, click through to discover which brands are adored by your fave celebrities!
Photos: Instagram

Beyonce knows how to workout in style. Queen Bey is helping ladies get in formation and shape with her new activewear line Ivy Park.
Photo: Instagram/@beyonce

Julianne Hough is the latest celebrity to join forces with a workout brand. The dancer turned actress helped design the latest collection for MPG Sports called “Jules."
The collection is available at stores including Lord & Taylor and Hudson's Bay.
Photo: MPG Sports

Rosie Huntington-Whiteley teamed up with British retailer Marks & Spencer for her new activewear line Rosie for Autograph Active.
www.marksandspencer.com

Photo: Instagram/@rosiehw

'Girls' star Allison Williams was so excited about her new gear she posted this photo with the caption, “@outdoorvoices & @manrepeller look how much joy your collaboration brought me! Jumping rope in my kitchen like a [queen] in your full kit!”
www.outdoorvoices.com

Photo: Instagram/ @aw

Kelly Ripa posted a workout pic wearing Koral Activewear's “Jet” jumpsuit with the caption, “Flexible yet stuck. Let the weekend begin.”
www.koral.com

Photo: Instagram/ @kellyripa

Model of the year, Gigi Hadid was spotted walking with Joe Jonas in NYC's Soho neighborhood wearing seriously cool “Phantasm” leggings in plum by Michi.
www.michiny.com

Photo: Instagram/ @michi_ny

Kourtney Kardashian got some family bonding in by working out in the rain with her sisters Kim and Khloe in Michi’s “Stardust” crop pant.
www.michiny.com

Photo: Instagram/ @kourtneykardash

Kim Kardashian was seen rocking some chic workout wear including a geometric crop top and high-waist leggings by Live the Process.
www.shop.livetheprocess.com

Photo: Instagram/@livetheprocess

Actress Naomi Watts went wilder and opted for a pair of leopard print cropped leggings from Live the Process.
www.shop.livetheprocess.com

Photo: Instagram/@livetheprocess

Former '90210' actress Jessica Lowndes worked out in Lorna Jane’s “Tyler” bra in hyper lime.
www.lornajane.com

Photo: Instagram/ @lornajaneactive

Actress Kate Hudson is so into fitness that she started her own line. The mom-of-two has been rocking the duds all over town. She showed off her tropical flare in this "Tropez" bra and matching pants.
www.fabletics.com

Photo: Instagram/ @fabletics

Supermodel Heidi Klum has become the face of New Balance's activewear line. Looks like the brand primarily known for shoes just got a runway makeover!
www.newbalance.com

Photo: New Balance

Brooke Burke can seemingly do it all: dancing, hosting, and now launching a lifestyle brand she clearly adores. She's not just the face of the campaign, she's a devotee to the Caelum lifestyle duds in real life too.
www.caelumlifestyle.com

Photo: Instagram/ @caelumlifestyle

Country cutie, Carrie Underwood is giving Kate Hudson a run for her money with her new line, Calia. The lifestyle apparel brand is available exclusively at DICK's Sporting Goods.
www.dickssportinggoods.com

Photo: Instagram/ @caliabycarrie

Gisele Bundchen proved that she is both fierce and fashionable when she signed up to work with Under Armour. The classic sportswear line has a ton of celebrity fans like Anne Hathaway, Britney Spears, Charlize Theron and more.
www.underarmour.com

Photo: Under Armour

'Girls' star Allison Williams was so excited about her new gear she posted this photo with the caption, “@outdoorvoices & @manrepeller look how much joy your collaboration brought me! Jumping rope in my kitchen like a [queen] in your full kit!”
www.outdoorvoices.com

Photo: Instagram/ @aw

Kim Kardashian was seen rocking some chic workout wear including a geometric crop top and high-waist leggings by Live the Process.
www.shop.livetheprocess.com

Photo: Instagram/@livetheprocess

Gisele Bundchen proved that she is both fierce and fashionable when she signed up to work with Under Armour. The classic sportswear line has a ton of celebrity fans like Anne Hathaway, Britney Spears, Charlize Theron and more.
www.underarmour.com

Photo: Under Armour