One source claims the 18-year-old was actually bullied for being there -- apparently not everyone thought she earned the right to walk the shows!
The insider spilled:
Wardrobe ban be DAMNED!
You can't tell Rihanna what to do!
Ri-Ri showed up in a custom, paper thin red Alaia that didn't leave MUCH to the imagination. While she didn't show up on the arm of Chris Brown, she did cause quite the stir, as you can CLEARLY see her nipple rings through the top of the dress.
Well, we can't say we are surprised! Girl lives by her own rules — and we wouldn't want it any other way.
[Image via Getty Images.]