Jeans
Jeans are trousers.
Rose Tyler sometimes wore denim jeans. (TV: Rose, The End of the World, Aliens of London|World War Three, Dalek, Fear Her, etc)
Sarah Jane Smith tended to wear denim jeans. (TV: School Reunion, onwards)
Martha Jones tended to wear denim jeans. (TV: Smith and Jones, The Shakespeare Code, Gridlock, Daleks in Manhattan/Evolution of the Daleks, The Lazarus Experiment, The Sound of Drums/Last of the Time Lords)
Donna Noble wore some denim jeans. (TV: Planet of the Ood, Silence in the Library|Forest of the Dead, Turn Left, The Stolen Earth|Journey's End, The End of Time)
Maria Jackson wore jeans of denim (TV: The Eye of the Gorgon, onwards).
Amy Pond wore skinny jeans of denim. (TV: The Impossible Astronaut, etc)
Gwen Cooper wore denim jeans. (TV: Everything Changes, onwards)
Jack Harkness observed that Owen Harper wore "tight" jeans. (TV: A Day in the Death) Earlier, Jack purchased denim jeans from a Topshop in Cardiff. Trine-E and Zu-Zana called it a "design classic", but considered it dated by the year 200,100. (TV: Bad Wolf)
Tom liked wearing loose jeans, which Iris Wildthyme thought hung down "halfway down his arse". (PROSE: Preface)