Traditionally, no! going “regimental” means wearing no underwear under a kilt. In modern times, it’s entirely personal choice. Most people today wear underwear such as briefs, boxer-briefs, or compression shorts for comfort, hygiene, sport, or modesty. The right choice depends on the occasion, weather, and personal confidence.
Tradition vs Today
Traditional Highland Practice
Historically, kilts were often worn without underwear, especially in military regiments and ceremonial Highland dress. This “regimental style” became part of Highland identity and was linked to practicality, freedom of movement, and tradition.
Modern Approach
Today, kilt-wearing is much more flexible. People choose what suits them best depending on comfort and setting. Most modern wearers prefer boxer-briefs, compression shorts, or breathable underwear, especially for long events or active movement.
What to Wear Under a Kilt (By Occasion)
Formal Events (Weddings, Black Tie, Ceremonies)
For formal occasions, appearance and confidence matter most. Many choose seamless briefs or fitted boxer-briefs to avoid visible lines when sitting or dancing. Pair the outfit with Prince Charlie jackets, dress sporrans, and ghillie brogues for a complete formal look.
Highland Games, Dancing, and Active Events
Movement-heavy events call for practical choices. Compression shorts or moisture-wicking boxer-briefs help prevent chafing, improve comfort, and keep everything supported during activity.
Casual Wear and Travel
For everyday wear, comfort is key. Cotton or bamboo boxer-briefs are ideal for long hours, travel, or warm weather because they are breathable and soft on the skin.
Cold or Windy Weather
In colder conditions, thermal base-layer shorts provide warmth without changing the traditional appearance of the kilt. They work well under heavier tartans.
Etiquette and Good Practice
It is considered impolite to ask someone what they wear under their kilt. When sitting, keep the front apron in place and maintain a neat posture with knees together or slightly angled. Ensure the kilt pin goes through only the outer apron, not both layers, to preserve proper structure and movement.
Fabric and Fit Tips
Choose breathable, moisture-wicking fabrics to stay comfortable. Avoid thick seams that can show through lighter tartans. Mid-thigh boxer-briefs or short compression styles work best with kilt length. A well-fitted kilt worn at the natural waist also improves overall comfort and appearance.
Women and Children
Women can choose undergarments based on comfort and modesty, with seamless briefs or shorts commonly used. For children, comfort and practicality matter most, so soft underwear or shorts are ideal for events or school functions.
Key Styling Foundations
A properly worn kilt should sit at the mid-knee length. The sporran should hang about 3–4 inches below the belt buckle. Ghillie brogues should be neatly laced, and kilt hose with flashes should be arranged cleanly to complete the look.
Conclusion
Wearing pants under a kilt comes down to personal choice. Tradition allows going regimental, while modern wearers often prefer underwear for comfort and practicality. What truly matters is wearing the kilt correctly, confidently, and with respect for its heritage.
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