Get an exclusive sneak peek from some of today's hottest bridal designer collections.

Every runway season, our hearts flutter with excitement in anticipation of the newest bridal creations. This Spring 2015 season was no exception, with everything from romantic tiered tulle skirts to new pastel and metallic colors to the sheerest of illusion necklines walking our favorite designer runways.

But how do the genius minds behind the biggest bridal design houses come up with this such gorgeous gowns? It all starts with a sliver of inspiration — whether it's a something as abstract as the idea of modern romance to a more concrete theme like 1930s glamour, cityscapes and southern belles. Next, each designer take her ideas and put them down on paper in the form of a sketch. The blue-print to a wedding dress, each designer maps out his or her design before constructing your dream gown!

To let you in on this incredible process, we got an exclusive sneak peek from some of today's hottest bridal designer collections. Featuring the latest trends in wedding gowns, Brides takes you "behind the seams" to let you learn more about the designers' inspirations — which include everything from vintage elegance to the iconic royal wedding — and see firsthand sketches for the season. From Alvina Valenta's airy, romantic dresses to Lazaro's opulently embroidered gowns, Karen Willis Holmes's confident individuality, and Madison James's elegant femininity, see how designer dreams up gorgeous creations to fit every bride's unique aesthetic.

Click through to see each designer's wedding dress sketch and learn more about their collection's inspiration!

Photo: Courtesy of Karen Willis Holmes and Alvina Valenta

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