Article continues below advertisementJennifer Lopez "danced the night away" to ring in her 56th birthday.On Thursday, July 24, the pop star celebrated with an elaborate birthday party and surprise song release.Article continues below advertisementSource: @jlo/InstagramJennifer Lopez donned a sultry birthday ensemble.Lopez dazzled in a skintight, floor-length halter dress with an exposed back. A three-tiered cake was wheeled out, complete with sparklers, pink icing and "J.Lo" spelled out on the top two layers.