FIRST CAME plastic surgery, then it was the Wonderbra - now the cleavage has a new weapon in the form of a chest expanding gel.

Bust Booster has arrived from America with the claim that one drop can boost breasts a full bra size for an entire evening.

Manufacturers say the gel's pert powers wear off after five hours, leading to a potentially embarrassing droop already Christened the 'Cinderella effect'.

Undeterred, woman across the North-East are queuing up to get their hands on tubes of the gel .

Melanie Cairns, 27, from Durham City, who put the gel to the test said her breasts ballooned by a full three inches within minutes.

She said: "At first my boobs just felt cold all over, but then they started to tingle and gradually began to get quite warm.

"When I walked through the streets afterwards I got a few admiring glances."

Girls have David Green, a South Yorkshire businessman, to thank for the innovation. His company, Studio Holdings, of Rotherham, has invested in the gel - at £60 a tube for about 30 applications - after it went down a storm in the US.

He explained the science of size enhancement: "It works by stimulating the network of capillaries in the breasts which encourages a natural process called vasodilation. This rushes blood to the treated area." He added the gel has tissue strengtheners that stop breasts sagging as they get bigger and heavier.