Kilt
A kilt was a knee-length skirt-type garment which was the traditional dress of men and boys in the Scottish Highlands.
Jamie McCrimmon spent his time travelling with the Second Doctor wearing his kilt, even when it was too cold to do so. (TV: The Highlanders, TV: The Abominable Snowmen, et all)
The Brigadier wore a kilt meeting the Fourth Doctor, Sarah Jane Smith and Harry Sullivan in Scotland. He explained to Sarah Jane that the reason he was wearing it was that his family was from the clan Stewart (TV: Terror of the Zygons)
When the Fifth Doctor was giving Erimem a tour of the TARDIS, he told her the kilt in the wardrobe belonged to Jamie. (AUDIO: No Place Like Home)
Burrows compared Captain Kybo's uniform to a kilt. (AUDIO: Judoon in Chains)