we have three more installments of f-squared to go, so we are really in crunch time as christmas rolls around. for the beginning of the end, we have Miss Lilli VanHall today. Lilli is a ModelFit instructor, writes a blog called HappyGoLilli, and is stunning inside and out. I met Lilli over the summer when I developed a true, but healthy, addiction to her ModelFit class on Thursdays at 6.30. Ever since then, I've been following Lilli over social media and she radiates happiness through each and every post (which is hard to do these days), plus gives plenty of #hashtag athleisure inspo.