A new, ‘smart’ bra that boosts a woman’s cleavage when she feels sexy is being tested by lingerie designers.

The bra detects changes in body temperature brought on by sexual arousal and squeezes breasts together to create bigger cleavage.

“As a woman’s body changes, so does the size of the bra,” said designer Suzana Gorisek from Slovenia Lisca. “That’s the advantage of this bra.”

The lingerie company is one of the largest lingerie producers in Eastern Europe. Donald Trump’s wife, Melania Knauss, was once its star model.

The bra is already on show at Europe’s largest lingerie event in Paris and is due to hit the streets of Britain this summer.

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