Order by 17.12.25 (Standard delivery) or by 18.12.25 (Next Day delivery - 12pm), to receive your order before Christmas - SHOP WOMEN | SHOP MEN
Enjoy 15% off your first online order - SIGN-UP
Free shipping & exchanges on all orders*
How To Measure
- Length Measure down the center of the back, from the top edge of the garment to the hem.
- Chest Measure from the seam below the armpit to the other across the bust.
Exclusions
Promo T&Cs
WELCOME OFFERFor new subscribers only. Discount will be applied when your unique promotional code is entered at checkout. Offer valid online at uk.theory.com. Offer not valid on sale, discounted or Theory Archive styles. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
INFLUENCERS
Discount will be applied when the promotional code is entered at checkout. Offer valid in Theory retail stores and online at theory.com in the UK only. Offer not valid on sale, discounted or Theory Archive styles. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
ESSENTIAL DUOS
Choose two selected womenswear or menswear styles, in any size or colour to receive an additional discount. Discount will be auto-applied at checkout. Offer valid online at theory.com in the UK only. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.
ARCHIVE + SALE + OUTLET
Offer valid on selected styles in Theory UK Retail stores and at uk.theory.com only. Offer cannot be combined with any other promotional offer, redeemed for cash, or applied to previous purchases. Offer terms are subject to change.