Big summer sales are happening virtually everywhere, so allow me to narrow your focus to one sale in particular taking place today on ideeli.com - the Shopping Marathon. Find women's designer and contemporary apparel, handbags, activewear, outerwear and denim at huge markdowns. It's like ideeli's infamous red sales, ramped up. Sale starts promptly at 12 noon EST. Shown above are three of my top picks that are likely to sell out within minutes.