Giantess

Both Gwen Stefani and Fergie's dancers are diminutive and anonymous to make them look like giant women w/ giant personalities. Perhaps the springboard to success is catering to the "Giantess Fetish". I really kinda hope so. I don't think this is the first time "back up" has made the vocalist, but these desperate times call for desperate and larger than life, giant, measures. Fetishes make money and so does an effective giantess.