The right footwear is key to staying comfortable during hot, sunny days. You want something breathable and supportive that is still stylish, and Birkenstock sandals check all of those boxes. Jessica Alba proves that the popular sandals can be worn anywhere (and stars like Taylor Swift seem to agree). The best part? This is a celeb-loved style that's affordable enough to snag for yourself. Alba was spotted wearing her Birkenstock Arizona Birko-Flor Slides while getting some quality beach time in Miami, Florida.