Sparking another round of are-they-or-aren't-they rumors, Jessica Biel watched on as Justin Timberlake hit the links during his Shriners Hospitals for Children Open at TPC Summerlin in Las Vegas, Nevada yesterday (September 28).

The "Texas Chainsaw Massacre" actress kept cool on the course as she sported a white ball cap and sunglasses under the shade of a black umbrella.

Enjoying a hiatus from filming, the short break in her acting schedule allowed Jessica to make the Sin City getaway with her on/off beau.

Prior to hitting up JT's charitable event, Miss Biel was in New York City, where she was tending to reshoots for her forthcoming comedy "New Year's Eve."

Enjoy the pictures of Jessica Biel at the Shriners Hospitals for Children Open in Las Vegas, where she watched rumored on-again beau Justin Timberlake hit the links (September 28).

Photo Credit: INF Daily