Lindsay Lohan and her fiancé, Russian business heir Egor Tarabasov, were snapped relaxing on a yacht over the weekend, and ET has pics of the pair getting cozy on the water.

Lohan embraced her fiancé for a kiss, putting her 5-carat emerald engagement ring on full display on May 20 while aboard a friend's boat in Antibes, France.

The adorable moment was made even more charming by the beautiful sunset in the background.

WATCH: Lindsay Lohan Engaged to Russian Business Heir Egor Tarabasov

Earlier in the day, Lohan sizzled in a plunging one-piece, showing off her swimsuit bod.

The 29-year-old actress wore another deep plunging number on April 12 when she joined her father Michael and mother Dina at the Duran Duran concert at the Barclays Center in Brooklyn, New York. Earlier that same day, ET confirmed Lohan's engagement news.

Michael spoke to ET shortly after, gushing about his daughter's relationship.

PIC: Lindsay Lohan Shows Off Engagement Ring at Duran Duran Concert

"I'm so happy that Lindsay has found true happiness," Michael told ET. "It's written all over both of them."

The Mean Girls star and the 22-year-old Russian business heir have been dating for less than a year, and the actress only confirmed their relationship in March, gushing to The Sun, "I do have a boyfriend and he is a great guy."