Jennifer Aniston and Justin Theroux vacation in Paris Abaca/AKM-GSI Jennifer Aniston and Justin Theroux look great together anywhere, but ...

Jennifer Aniston and Justin Theroux vacation in Paris

Abaca/AKM-GSI

Jennifer Aniston and Justin Theroux look great together anywhere, but they look especially chic in Paris.

The couple touched down at the City of Light's Roissy Airport earlier this week and have appeared to be really enjoying themselves—and each other—ever since.

A source tells E! News that Aniston has embarked on a 10-day vacation—so no wonder she's all smiles!

We hear Aniston went shopping Monday at Gabrielle Geppert at Palais Royal, a boutique that specializes in vintage finds and designer brands like Chanel.

She stayed at the Bristol when she first got into town, but has since moved on to another luxury hotel, a source says.

Five-star acccomodations, a smokin'-hot boyfriend, one of the world's most romantic cities—what else could a woman want from her vacation?