Hayden looked fantastic in a halterneck bikini as she holidayed in Mexico last week.Joined by her NFL star boyfriend Scotty McKnight, 24,the Heroes actress certainly looked confident as she flaunted her figure on the beach.The green two-piece showed off her curves perfectly but onlookers may have been left disappointed when she covered up to go parasailing with her beau.Hayden was certainly in for a thrill as she took to the skies to indulge in the adrenaline fuelled activity as she and Scotty took to the skies on a parasailing outing in Cabo San Lucas, later joining a party of other fun-seekers, heading out on to the ocean.She showed off her svelte and petite figure in the pretty two piece while chilling out with Scotty, applying sun tan lotion on the sports star’s back. She later put on a pretty patterned cover-up, before sharing a kiss with her man, who wore a pair of brightly coloured shorts.Hayden has been dating New York Jets star McKnight for the past year. She formerly dated Ukrainian heavyweight boxing champion Wladimir Klitschko and once shared a romance with her Heroes co-star Milo Ventimiglia.Speaking of her relationship with Scotty recently, 5ft2in Hayden told Us Weekly: ‘I’ve always been that girl who has a lot of dude friends. I’m into sports, so Scotty and I have a lot in common.’ The couple looked as close as ever as they kissed and cuddled.Fresh-faced Hayden told People.com in a recent chat how she always makes sure to put on protection from the sun under her make-up because she is worried about getting skin cancer.’I make sure that I put sunscreen on under my make-up, or just by itself, no matter where I am going,’ she explained.’It’s actually interesting because I realised that even high SPFs … if you don’t reapply, you’re not going to get the same kind of coverage. SPF 70 can be like a 19 SPF if you don’t apply it properly.’Skin cancer has become such a huge epidemic, especially in young women, so it is really important that people learn how to take care of their skin and be preventative.’The blonde beauty also revealed she carries her favourite cosmetics with her wherever she goes.She said: ‘I have them all in my purse. I love the Neutrogena MoistureShine lip gloss.’We always use them on our cheeks, too – especially when we carry around bags the size that we do where you can fit like one lip gloss in there.’Photos coming later today!