Selena, 19, joined Justin on his promo trail for Under The Mistletoe, following her hosting duties at the 2011 MTV EMAs.
Earlier yesterday, Justin and Selena both stopped by NRJ Radio for a quick interview before heading out to enjoy the City of Lights.
Also, check out preview #2 of Selena‘s upcoming video, “Hit The Lights”!
Selena Gomez – “Hit The Lights” Teaser #2
FYI: Justin is wearing Levi’s.