Lululemon Athletica, which designs and sells yoga-inspired apparel, increased the number of shares it expects to offer for its IPO Tuesday. The firm now plans to offer 18.2 million shares, including 15.9 million from selling shareholders. The firm initially planned to offer 18.2 million shares, but then cut its deal size to 16.4 million late last week. Goldman Sachs and Merrill Lynch are the bookrunners on the deal.