Ryan Phillippe's fiancee, Paulina Slagter, flashed the rock on her ring finger when the duo came out to celebrate New Year.
The 41-year-old actor said that the giant solitaire engagement ring marked a perfect representation of Slagter's personality, reports E! Online.
The duo was also seen sharing a romantic kiss at midnight at the beachfront venue to ring in 2016.
It was previously reported that Phillippe proposed his 25-year-old girlfriend on Christmas Day.
This will mark the second marriage for the actor, who was previously married to his 'Cruel Intentions' co-star Reese Witherspoon.