Christina El Moussa Models Her New DIFF Sunglasses Collaboration in a Bikini, of Course

It's fair to say about 50 percent of Flip or Flop's Christina El Moussa's Instagram is made up of photos of herself modeling a different chic, stylish pair of shades. So she put her expert know-how to the test with a brand new sunglasses collaboration with DIFF eyewear. The TV star decided to partner up with the brand because she loves the styles (a given!) but also because the company is focused on giving back. "I just really liked the style of their sunglasses so they asked me about doing my o...