4. AWAY THAT DAY SWIMSUIT

For a swimsuit that will leave you feeling like a Hadid sister on an eco retreat, look no further than sustainable brand Away That Day. Each supportive, flattering-as-hell one-piece is made out of durable Econyl – a surprisingly soft material crafted from regenerated waste, such as ocean plastic, nylon scraps and rejected fishing nets. Basically, you’ll feel like an ethical mermaid.

£125, awaythatday.com