Now we already know very well just how sexy sisters Gigi and Bella Hadid are. The former has posed for the SI Swimsuit Issue and the latter, well, she’s just hot no matter what she does . Turns out that there is a very good reason that those Hadid siblings are so damn good-looking. They got it from their mom Yolanda Hadid who was also a model for 15 years. Of course any of you that watch The Real Housewives of Beverly Hills probably already know that, so I am going to assume that means none of you, right? Right?! Not bad for 52, Yolanda. Not bad at all.