Selena on Instagram: I’ve been an ambassador since I was 17

@selenagomez: So happy @louisvuitton and @nicolasghesquiere are partnering with @unicef -I’ve been an ambassador since I was 17, met Nicolas last year. SO grateful for the worlds to collide for a great cause.

So happy @louisvuitton and @nicolasghesquiere are partnering with @unicef -I've been an ambassador since I was 17, met Nicolas last year. SO grateful for the worlds to collide for a great cause.

A photo posted by Selena Gomez (@selenagomez) on Jan 12, 2016 at 8:54pm PST