The couple - whose relationship is rumoured to be on the rocks - were on top form as they headed into Jenni Kayne and Andy Lecompte's Salon Party.
Lindsay seemed to be back to her old self, in a glamorous black frock and smoky eye make-up whilst Sam opted for her less-glitzy trademark jeans and a jacket.
The Mean Girl had competition in the fashion stakes, however, as Nicole Richie managed to steal the spotlight in a stunning tomato red dress and gold head band.Lindsay and Sam will be hosting their own party this Valentine's Day at Passion nightclub in Florida.