Nanook of the North

Ben Jackson once called Polly Wright "Nanook of the North" to describe the thick outerwear she had found from the TARDIS wardrobe to protect her from Antarctic weather. (DW: The Tenth Planet)

Behind the scenes
Though unspecified in the script, Nanook of the North was a real person whose life had been captured in a 1922 award-winning documentary about Arctic s. The name became synonymous with being prepared for, or thriving in, wintry conditions.