US label Eberjey scooped the award for the Lounge & Nightwear Brand of the Year in the 2015 UK Lingerie Awards.
The company has seen a dramatic increase in sales over the last few years due to a growing trend for luxury loungewear crossing over into outerwear.
The brand has benefited from consumers opting for fashion-forward designs that are multi-use.
Founded in 1996 by Ali Mejia and Mariela Rovito, Eberjey is renowned for its luxury pyjama sets, robes and chemises made from materials such as viscose and stretch lace.
The brand impressed the UKLA panel with its Sleep Chic pyjamas, featuring menswear styling and a feminine print.
Shortlisted finalists in the Lounge & Nightwear Brand of the Year category also included DKNY, F&F, Gilda & Pearl and Hanro.