She's been living it up in Maui, Hawaii with sister trio Haim.

And Taylor Swift was back at the beach on Monday as she splashed around in the sea with fellow musicians Este, Danielle and Alana Haim, wearing an adorable blue polka dot swimsuit.

The 25-year-old singer looked cute as a button in her retro swimwear from Seafolly which boasted a sweetheart neckline and a halterneck top.

Scroll down for video

Shaking it off: Taylor Swift was frolicking around on the beach in Maui, Hawaii on Monday during her winter getaway with the Haim sisters

A welcome departure from some of her showbiz peers, Taylor kept it classy in her modest bathing suit, which flattered her tall and slender frame.

The Blank Space hit-maked looked like she was having the time of her life as she dived into the ocean with her pals, taking dozens of pictures and dancing in the shallows.

Taylor was her usual fun-loving, goofy self, striking dozens of silly poses as she pranced around on the water's edge.

Making waves: The 25-year-old blonde opted for a cute polka dot swimsuit with a sweetheart neckline

Modest cut: The star's Seafolly swimwear, dubbed the Boyleg Maillot, made the most of her slim frame

Daredevil: The I Knew You Were Trouble hit-maker screeched after diving into the sea headfirst

So cold! The pop princess couldn't get over how nippy the water was

Reaching new heights: Taylor was fooling around on the rocks as her friends egged her on

Selfie time! Taylor held her camera aloft as she called her pals together for a group photo

One for Instagram: Taylor will no doubt be posting some of the pictures on her social media accounts

Record-breaker: Taylor's latest offering 1989 was the top-selling album of 2014 and sales are going strong

She couldn't bear to be parted from her usual slick of bright red lipstick and kept her gold necklace on in the water.

The pop princess has been keeping her 20.2million Instagram followers updated with her beach antics ever since she touched down in Maui last week.

The hardworking singer is making the most of some rare time off after a stellar year 2014, which saw her career skyrocket to new heights.

Lady in Red: The country singer donned a vibrant red hat to keep cool in the sun

Specs appeal: Taylor also added quirky sunglasses to protect her face from the sun's rays

Goofing around: Taylor is known for her down-to-earth attitude and never takes herself too seriously

Welcome break: The blonde beauty has been soaking up the sun in Hawaii with fellow musicians Haim

Dancing queen: Taylor was showing off her unusual ballet moves on the sand

Haters gonna hate: Taylor doesn't care about what anyone thinks of her

Model behaviour: Taylor and Alana Haim pretended they were on a photoshoot

Her latest slice of pop perfection, 1989, has surpassed the 4 million sales mark and looks set to beat the precedent set by her record-breaking album Red.

Meanwhile, Taylor has firmly established herself as a role model and revealed that her young fan base keeps her in check.

She previously told Barbara Walters: 'I put every one of my actions through a filter before I do them because that's the way my life is.

'That the reality… If I do something reckless or thoughtless or careless, or I treat someone badly, that doesn't just affect me; it affects that person.

'Then, if that story gets out, or some 10-year-old sees that I did that in a news article… my actions do have ripples.'

Strike a pose: Taylor and Este, Danielle and Alana Haim worked their best angles in the sea

Showbiz pals: Taylor seems to be BFFs with every woman in the industry

Firm friends: The girls have become close since filming the Jingle Ball in Los Angeles before Christmas

Cementing their friendship: What better way to get to know someone than jetting off on holiday with them

Relaxed vibe: The girls were more focused on having fun than anything else

Let's do that one again: Taylor made sure to capture their every move on camera

Shady lady: Taylor made sure to protect her pale skin from the sun with some SPF

Sister act: Danielle (left) and Alana Haim (right) opted for simple bikinis and wore their trademark long locks down loose for their beach visit

Bathing beauties: The girls stretched out on the sand to top up their tans