THE BEST HAIR TRENDS FOR SPRING 2015

Whether embellished, slicked back, pulled high and tight or worn down in loose waves, the hairstyles on the spring runways all had one thing in common: serious length. Start growing out your bobs and lobs because long hair is back and it's cooler than ever. Here, our favorite trends from the Spring 2015 shows.  Check ULTA 20 off entire purchase for best hair styling products.

BOHO WAVES Carefree, barely-there waves cascaded onto sheer dresses, pastels and floral prints at Marchesa (left), Chloé, Valentino and more for a free-spirited, bohemian moment.

LONG TAILS Ponytails went from high and sleek at Oscar de la Renta (left) to looser and lower at Gucci and Jason Wu to practically falling out at Rag & Bone.

BRAIDS & TWISTS From twisted rope braids at Donna Karan (left) and cornrowed buns at Giorgio Armani to messy, classic plaits at Michael Kors, there's a braid for every skill level.

BIG BUNS At Altuzarra (left), the buns were shaped into soft hearts, while at Carolina Herrera, models wore graphic, Japanese-inspired "sumo knots." Others, like the ones at Edun and Erin Fetherston, were full and classic.

BOMBSHELL BLOWOUTS Big, sleek blowouts and bouncy curls, as seen at Diane von Furstenberg (left), referenced the ultimate sex symbol—Brigitte Bardot—and were the result of setting the hair in lots and lots of rollers.