We've all laughed at our parents' wedding photos (Mom, that floppy hat—really?). So, what exactly makes a wedding dress timeless? To find out, we asked top designers to point out the styles that continue to be popular several seasons (and even years) later.

Alfred Angelo

Style 1516 (2005)

"When we offered color trim accents in our bridal collection several years ago, thousands and thousands of brides responded to the look," says designer Michael Shettel.

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Photo: Courtesy of Alfred Angelo