1840 ET - Lululemon is increasing marketing to try to win back customers as traffic continued to slow down in the second quarter. The brand has faced negative sentiment in the media and on social media, interim co-Chief Executive and Chief Financial Officer Meghan Frank tells analysts on a call. To improve the brand's name Lululemon is advertising at sporting events, including the U.S. Open, and marathons in major cities this fall, executives say. "I would say given the challenges we've seen from both the brand and product perspective, we do feel strongly that we need to continue to keep our investment level in marketing," Frank says.