Check it out ... the "Modern Family" alum hits The Corner Store, an upscale restaurant in NYC's SoHo neighborhood, in a chic burgundy jumpsuit and matching floor-length trench coat.

While Sofia looking jaw-dropping isn't necessarily news -- she always looks great -- her solo status Wednesday night certainly transmitted a message ... given a mere day prior there was chatter about her love life.

As you know, Sofia appeared to be hitting it off with the auto-racing star during a lunch date in New York City Tuesday. The twosome was spotted chatting it up and laughing on the streets of New York ... sending the internet into a tizzy, with many wondering if there was more going on there.

However, sources with direct knowledge later told TMZ ... SV and LH were NOT on a date and were just casually lunching with a group of friends.

Fast-forward to Wednesday evening, Sofia has no suitor by her side ... further cementing the romantic speculation was just fans' wishful thinking.