Christo Fifth Avenue's "Spring Delight" features face-framing layers.

Luscious waves and sexy curls are hot for spring, whether they be long, cascading ringlets or messy buns.

"This season is about casual elegance," says New York stylist Rodney Cutler. "We're seeing a Boho look, with more style."

Long layers are big this spring. Cuts have a lot of movement that accentuates the texture.

"Layers are off the charts," Cutler says.

Lorraine Massey of Devachan, author of "Curly Girl," is seeing almost exaggerated length, with shorter layers in the front.

"It's a faux Farrah look," Massey says. "We're definitely seeing shape again. It's not long hair just for the sake of having long hair."

Christo of Christo Fifth Avenue has unveiled two curly cuts for spring that use angled layers. The angle is cut based on the face structure

"Spring Delight, " which features face-framing layers, works best on hair that's wavy to medium curl.

"The hair still has a shape, even without using styling product," Christo says.

For tighter, kinkier curls, Christo has introduced "Curl Expressions," which uses long layers to bring more shape to the curls.

"If you cut it one length, the hair has no lift -- no expression; it has a pyramid look," Christo says. "By using angles, it's a way to make every single curl pop out and look its best. The hair looks more springy, more bouncy. It has more sex appeal. "

Massey's seeing haircuts that are shorter and fuller. The look is soft and sexy -- not overly controlled.

"Curls are not supposed to crunch," she says.

The curling iron is making comeback this season, with curls being redefined into looser ringlets. Cutler likes to use a medium to large curling barrel, casually wrapped 2-inch to 3-inch sections from the end to the root.

"The look is flatter at the roots and wavier at the end," Cutler says

To go along with the more casual looks for spring, color is multi-faceted, with natural-looking highlights.

"I'm seeing a lot of dimension -- a lot of low-lights and highlights interwoven," says Marsha Coulton," a Brooklyn curl specialist.

Christo is doing "spring highlights" in shades ranging from caramel to golden blonde.

"We're using lighter, warmer shades," Christo says. "People can't wait for winter to go away."

He uses a technique called "smart lights," in which foils are sprinkled along the top of the hair to warm up the face. The roots aren't highlighted.

"It blends nicely and creates more of an effect," Christo says.

If the hair is blonde, Christo uses a technique he calls "Smart Blonde." The blonde is accelerated into the root area to make the woman look like more of a natural blonde.

"If your hair is naturally dark blonde, it brings you to a light blonde in a natural way that doesn't look like you color your hair," Christo says. "It looks like you have natural highlights from the sun."

Massey likes to paint on highlights to accentuate the curls, as if she was painting on a canvas.

"I really try to avoid linear lines," says Massey. "I try to respect each curl."