‘Modell’s of yoga’ goes to mat in square

For ladies who lunge…sweat-pant-provider-to-the-yoga-set lululemon athletica is coming to the square. The Vancouver-based retailer already has locations on the Upper West Side near Lincoln Center and another set to open on the East Side at 66th St. The so-called “Modell’s of yoga” will be joining Sketchers and another HSBC Bank (there’s already one on the east side) at Brack Capital’s 15 Union Square West, sources say; diehards lamenting the neighborhood’s accelerating transformation from ‘Needle Park’ to bobo paradise will recall the building was once home to Tiffany & Co.