27-year-old model Blac Chyna was joined by her boyfriend Rob Kardashian as she posed for a seriously sexy photoshoot on the beach in Los Angeles, showcasing her incredible curves for the cameras, displaying her ample assets and voluptuous rear in an array of skimpy swimwear as a grinning Rob proudly cheered her on from the sidelines, happily showing his face in public after years as a recluse!!! See more photos after the break