Stella McCartney covers up in a floaty kaftan as she enjoys romantic beach stroll with husband Alasdhair Willis in St Barts

She's a busy mum of four as well as having her own ethical fashion line.

And Stella McCartney enjoyed a well-deserved break with her husband Alasdhair Willis on the Caribbean island of St Barths.

Covering up against the sun in a floaty kaftan, the 45-year-old daughter of Sir Paul McCartney saw in the New Year on a sun-soaked beach.

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Seeing in the New Year right! Stella McCartney enjoyed a well-deserved break with her husband Alasdhair Willis on the Caribbean island of St Barths

The boho-chic piece reached ankle length, even covering up her arms.

Allowing a glimpse of sun to tan her legs, Stella gathered the billowing piece by her waist as she walked bare-foot along the warm sands.

Showcasing her natural beauty, she appeared to go make-up free, donning simple oversized shades. 

Winter sun: Covering up against the sun in a floaty kaftan, the 45-year-old daughter of Sir Paul McCartney saw in the new year on a sun-soaked beach

No risk of sunburn! The boho-chic piece reached ankle length, even covering up her arms

Alasdhair opted for a simple white T-shirt and red shorts, carrying his flip flops.

Wearing his silver-hued hair in a ponytail, he had clearly been receiving some fashion tips from his designer wife.

The duo appeared deep in conversation as they enjoyed a stroll alongside the blue ocean.

Sun and sand! Allowing a glimpse of sun to tan her legs, Stella gathered the billowing piece by her waist as she walked bare-foot along the warm sands

Natural: Showcasing her natural beauty, she appeared to go make-up free, donning simple oversized shades

The handsome couple- who have been married for 13 years, are parents to sons Miller, 11, and Beckett, 8, as well as an elder daughter Bailey, and youngest daughter Reiley, 6. 

Stella has a successful fashion line, which she also uses to champion her applaudable pro-animal beliefs, previously telling the Telegraph: ‘There are a lot of designers who are very f*** you when it comes to using fur,’ she says. ‘If it’s wrong to do fur, then they’re going to do it.

‘But given that there are only about three of us who don’t do fur, they’re not being very punk. They’re just complying with every other fashion house.

'The fur industry gets to fashion students so young, paying them to use it. But even if you don’t care about the millions of animals killed for fashion, it’s not sustainable, and it’s not modern. Every other industry tries to move forward, apart from the fashion industry.’ 

Yummy mummy: She is mum to sons Miller, 11, and Beckett, 8, as well as an elder daughter Bailey, and youngest daughter Reiley, 6

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