Lululemon Athletica (LULU -0.16%) and Nike (NKE 6.17%) are two iconic, well-known apparel brands. Nike has been on a more steady decline, whereas Lululemon's stock has recently been in a free fall. The case for LululemonLululemon has been a faster-growing stock in recent years than Nike. Lululemon's growth is likely to slow in the near term, but with a strong brand, it can recover over the long haul. But when they do, the stock that may have the most upside is Nike.