Oh hey, Beyoncé!  The pregnant singer was spotted at a port in the South of France, where she was snapped hopping aboard a luxury yacht with hubby Jay-z, sister Solange and her sibling's boyfriend Alan Ferguson.  Taking some much-needed R&R time in between touring for her Mrs. Carter Show, the expectant star looked relaxed and content as she waved to the camera.  Sporting tight leather pants, wedge sneakers, retro shades and a Proenza Schouler bag, the soon-to-be mother of two looked effortlessly cool and pregnancy chic as she embarked on her mini-vacay.  The hard-working superstar was recently forced to cancel her Belgium concert due to "dehydration...