Shorts

Shorts were shorter versions of trousers and were often worn in warmer times. Shorts usually reached down to the knees though even shorter versions reached down only to the posterior.

Nyssa wore burgundy shorts during her second encounter with the Mara. (TV: Snakedance)

Peri Brown often wore shorts done on peach, (TV: Planet of Fire-The Caves of Androzani) pink, (TV: Attack of the Cybermen) cyan, (TV: Vengeance on Varos) or turquoise. (TV: The Two Doctors, et al.)

Lucie Miller wore alabaster shorts up to her death. (AUDIO: Lucie Miller, To the Death)

Amy Pond wore midnight blue shorts during her first encounter with Silurians. (TV: The Hungry Earth|Cold Blood)

Rose Tyler wore beige shorts when she and the Tenth Doctor met Chalderans on Krakatoa during 1883. (COMIC: Under the Volcano)

Clara Oswald wore a pair of black shorts when she joined the Eleventh Doctor. (TV: The Bells of Saint John) She later donned a pair of khaki cargo shorts when she and the Twelfth Doctor explored a jungle planet. (COMIC: Four Doctors) During their investigation of Ravenscaur School, Clara donned a pair of blue short shorts when the Sea Devils began attacking. (COMIC: Clara Oswald and the School of Death)

Li Shou Yuing wore chestnut brown shorts when she met the Seventh Doctor and Ace during their encounter with Morgaine and the Destroyer. (TV: Battlefield)

The Doctor once borrowed a pair of shorts from Fred Perry. The Eleventh Doctor noted that he'd never gotten around to returning them. (TV: The Power of Three)

In non-valid sources
Dipper Pines wore grey shorts. (TV: )