Hollywood starlet Lindsay Lohan caused a stir at the Venice Film Festival yesterday when she proudly displayed a dazzling ring on her engagement finger.

The Herbie: Fully Loaded actress received the enormous diamond-and-white-gold ring from boyfriend Harry Morton while on vacation in Hawaii, immediately sparking speculation they're set to tie the knot.

Posing for paparazzi in Italy for the premiere of new movie Bobby, Lohan did little to quash rumors by flashing the gem on the red carpet.

Find out more about Lindsay Lohan's white gold diamond engagement ring at Hollywood.com.