LONDON (Reuters) -European online fashion retailer Zalando reported first-quarter revenue that was stronger than expected, boosted by additional customers and a good start to spring and summer sales, while confirming its 2025 guidance.

The multi-brand platform that sells clothes, shoes, and accessories said revenue was 2.420 billion euros ($2.74 billion) for the three months ended March 31, beating analysts' average forecast of 2.367 billion.

Zalando's number of active customers rose to a new high of 52.4 million, up from 49.5 million in the first quarter last year. Adjusted earnings before interest and tax (EBIT) was 46.7 million euros in the first quarter, up from 28.3 million a year ago.

Revenue from Zalando's business selling logistics and software services to other retailers grew 11.6% from the first quarter last year, to 240 million euros.

TikTok Shop, the shopping arm of social media app TikTok, started using Zalando's ZEOS logistics service for sellers in Germany, France, and Italy in the first quarter, the company said.

Zalando confirmed its guidance "despite a fast-changing geopolitical and macroeconomic environment" as global trade tariffs drive many retailers to cut expectations for 2025.

Zalando expects a rise of between 4% and 9% in revenue and gross merchandise volume (GMV) in 2025.

($1=0.8831 euros)

(Reporting by Helen Reid; Editing by Muralikumar Anantharaman and Clarence Fernandez)

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