The Louis Vuitton brand and the LV monogram are among the world's most valuable brands.[21] According to a Millward Brown 2010 study, Louis Vuitton is the world's 29th most valuable brand, right after Gillette and before Wells Fargo. The brand itself is estimated to be worth over US$19 billion.[22] For six consecutive years, Louis Vuitton was number one of the ten most powerful brands list published by the Millward Brown Optimor's 2011 BrandZ study with value of $24.3 billion. It was more than double the value of the second ranking brand.[23]