Rihanna sunglasses top skirt red hair singer Kiki De Montparnasse half shirt

Rihanna stepped out looking fierce and fabulous as she made her way to a sexy lingerie store in West Hollywood on Sunday.

The sultry songstress has been raising eyebrows recently over her choice in friends on Twitter, but Riri wants fans to know the online friendship with ex Chris Brown is no cause of concern.

A 14-year-old fan of Rihanna's Tweeted to ask if she may be getting back together with Brown, to which the singer harshly responded: "its f---in twitter, not the alter [sic]! calm down."

The Umbrella singer later apologized to the female fan, saying: "Babygirl I'm sorry, I didn't mean to hurt or offend u! Just needed to make it clear to the Navy [Rihanna's fans' nickname]...xoxo."

Is it unhealthy for Rihanna and Chris to be Twitter friends?