(CNN) — An Indian airline has hit on possibly the worthiest excuse yet for hiring slim women as cabin crew — it saves fuel and therefore money.

While some airlines admit to hiring women for their sex appeal, budget carrier GoAir has told The Times of India it will be hiring predominantly female flight attendants in future because they are 15-20 kilos lighter on average than men.

The airline estimates each extra kilo on board costs Rs3 ($0.05) per flying hour, and the new policy will save it up to $500,000 annually.

A spokesman for the airline denied to CNN that it had implemented a gender-biased recruitment policy. But he confirmed that the airline’s male-female cabin crew ratio of 40:60 was among the most male-heavy in the industry in India.

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