Nicole Scherzinger & Lewis Hamilton: Engagement Before Six Year Mark?

Nicole Scherzinger rocks knee high boots while performing at the 2013 Music Summer Festival at the Italia Roma Piazza del Popolo on Thursday (June 27) in Rome, Italy.

The 35-year-old entertainer was also spotted donning a sheer dress and showing her midriff while performing at the festival.

PHOTOS: Check out the latest pics of Nicole Scherzinger

Nicole‘s boyfriend Lewis Hamilton recently told The Sun, “We’ve been together for five years, which is quite a milestone, really.”

“Hopefully in the near future. Maybe before we get to six years,” Lewis said about a possible engagement.

25+ pictures inside of Nicole Scherzinger performing in Italy…