Fashion is cyclical, but Susie Lau (the Brit blogger behind Style Bubble) proves you can still put a new twist on an old favorite. Her purple Birkenstocks are a fun update paired with equally colorful coordinates.

Jessica Alba, or as we like to call her, "Queen of the Boyfriend Jeans," pairs denim blue Birkenstock sandals with an airy top and slouchy jeans for an off-duty weekend look.

The Man Repeller's Leandra Medine's white Birkenstocks appear professional and polished, while still retaining their laidback appeal, when worn as part of a monochromatic ensemble. Stick to tailored pieces in classic colors for this more dressed-up look.

The appeal of Birkenstocks rests in comfort -- and a little quirk. Fashion blogger Style Limelight embraces both with her high-fashion take on the tomboy look. An oversized blazer and sports jersey, plus basic black Birks and total bedhead equals perfection.

Multi-colored Birkenstock sandals with an asymmetrical design were spotted at Houghton's spring/summer 2014 Fashion Week show, prompting Women's Wear Daily to speculate Birkenstock may be the "brand of the year."