Pitch Perfect co-stars Anna Kendrick and Brittany Snow cheer on Serena Williams at US Open

It's been seven years since Anna Kendrick and Brittany Snow first starred together in the first Pitch Perfect movie.

And their friendship has spanned two sequels and almost a decade of separate busy filming schedules.

On Sunday, the actresses reunited for a little Pitch Perfect reunion at the US Open where they cheered on Serena Williams and snapped selfies with fans.

Reunited: Anna Kendrick and Brittany Snow had a mini Pitch Perfect reunion Sunday when they attended the US Open to cheer on Serena Williams

Reunited: Anna Kendrick and Brittany Snow had a mini Pitch Perfect reunion Sunday when they attended the US Open to cheer on Serena Williams

The pair were spotted in the stands at the USTA Billie Jean King National Tennis Center in Queens, New York. 

Kendrick, 34, wore a red summer dress with a square neckline and a geometric print that featured white flowers.

She completed the look with some round brown sunglasses, which she removed when she took her seat. 

Snow, 33, donned a navy blue pinstripe blazer, which she removed to reveal a silk white spaghetti-strap sun top, and a matching mini skirt. 

She accessorized with a pair of gold-framed round sunglasses, gold hoop earrings and some gold necklaces.

Lady in red: Kendrick wore a red square neck summer dress with a geometric print that featured white flowers

Lady in red: Kendrick wore a red square neck summer dress with a geometric print that featured white flowers

Avid sports fan: Kendrick was completely wrapped up in the match

Avid sports fan: Kendrick was completely wrapped up in the match

Summer chic: Snow donned a navy blue pinstripe blazer, which she removed to reveal a silk white spaghetti-strap sun top

Summer chic: Snow donned a navy blue pinstripe blazer, which she removed to reveal a silk white spaghetti-strap sun top

Stay gold: She accessorized with a pair of gold-framed round sunglasses, gold hoop earrings and some gold necklaces

Stay gold: She accessorized with a pair of gold-framed round sunglasses, gold hoop earrings and some gold necklaces

Sponsored: The pair donned promotional Panama hats as they posed for pics at the stadium

Sponsored: The pair donned promotional Panama hats as they posed for pics at the stadium

The actresses enjoyed a few laughs and some cocktails as they caught up and watched the game.

They took to Instagram, sharing some video from the match, as well as some cute selfies.

They were also nice enough to oblige a few fans who approached them for some photo ops. 

Gal pals: The actresses enjoyed a few laughs and some cocktails as they caught up and watched the game

Gal pals: The actresses enjoyed a few laughs and some cocktails as they caught up and watched the game

Fan girls: They were also nice enough to oblige a few fans who approached them for some photo ops

Fan girls: They were also nice enough to oblige a few fans who approached them for some photo ops

Selfie time: They took to Instagram, sharing some video from the match, as well as some cute selfies

Selfie time: They took to Instagram, sharing some video from the match, as well as some cute selfies

Kendrick and Snow starred together in the 2012 comedy Pitch Perfect, which followed a disgraced all-women's collegiate a cappella group as they fought to win nationals and fix their reputations.

They also starred alongside Rebel Wilson, Anna Camp and Elizabeth Banks in the two sequels, which premiered in 2015 and 2017. 

Kendrick is currently filming her new series Love Life in the Big Apple. 

Kendrick and Snow starred together in 2012's Pitch Perfect, which followed a disgraced all-women's collegiate a cappella group as they fought to win nationals and fix their reputations

Kendrick and Snow starred together in 2012's Pitch Perfect, which followed a disgraced all-women's collegiate a cappella group as they fought to win nationals and fix their reputations

Pals: The two are clearly great friends

Pals: The two are clearly great friends

Also working: Kendrick is in New York filming a new series, called Love Life

Also working: Kendrick is in New York filming a new series, called Love Life

Quite a bump: In one sequence in the shoot for the anthology series, she plays a pregnant woman

Quite a bump: In one sequence in the shoot for the anthology series, she plays a pregnant woman

It's definitely a wig: Anna is also rocking serious bangs in one look for the new series

It's definitely a wig: Anna is also rocking serious bangs in one look for the new series

Filming: Kendrick is all smiles while filming Love Life in Manhattan

Filming: Kendrick is all smiles while filming Love Life in Manhattan

Anna's look: Kendrick was seen holding her baby bump while wearing a cream turtleneck under a grey coat with black pants and boots

Anna's look: Kendrick was seen holding her baby bump while wearing a cream turtleneck under a grey coat with black pants and boots

Friday look: Kendrick was seen filming scenes on Love Life wearing a different outfit on Friday

Friday look: Kendrick was seen filming scenes on Love Life wearing a different outfit on Friday

Jacket: Kendrick was wearing a green coat with a furry hood plus a white shirt with a colored stripe and dark blue jeans

Jacket: Kendrick was wearing a green coat with a furry hood plus a white shirt with a colored stripe and dark blue jeans

Serious look: Anna Kendrick gives a look while filming Love Life

Serious look: Anna Kendrick gives a look while filming Love Life

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Pitch Perfect co-stars Anna Kendrick and Brittany Snow cheer on Serena Williams at US Open

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