Luann de Lesseps Teases "Scary Island Part 2" on "Ultimate Girls Trip" Season 4

Be cool. Don't be all, like, uncool, and find out why Luann de Lesseps is making headlines.

The Real Housewives of New York City alum was recently spotted out for lunch with Mary-Kate Olsen's ex Olivier Sarkozy. 

Luann, 58, and Olivier, 54, were seen smiling as they strolled side by side in NYC after leaving the restaurant Le Bilboquet on March 4, according to photos obtained by the Daily Mail.

E! News has reached out to the reality star's and the French banker's reps for comment on where they stand. 

Meanwhile, a source with knowledge shared how Luann feels abo…