Want to get wavy hair as gorgeous those celebrity hairstyles with waves that are dominating the red-carpet? Our tips make it easy to get wavy hair overnight or right now—with or without heat.

Rihanna’s curly, wet-look bob is head-turning and easy to achieve. To nail her short wavy hair, David says to apply a curl-enhancing product to damp hair. “If your hair is prone to frizz ...