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A revolutionary vibrating bra could help enlarge a woman's breasts by ONE cup size.

The 'miracle' bust enhancer has been invented by Serbian Milan Milić.

And he claims it also makes breasts perkier and brings them closer together - in just SEVEN days.

If the incredible bra passes clinical tests, millions of women could get a bigger cleavage without undergoing painful breast surgery.

The former engineering student who now works as a security guard has spent months researching the unique concept.

Inventor Milan's girlfriend Jelena Sabic, 24, first tested the prototype - and the couple were blown away by the results.

Milan, from Lazarevac, Serbia, said: ‘It all started about two years ago. Jelena wanted bigger breasts and wanted plastic surgery but she was afraid of the operation and the scars afterwards.

‘She didn’t want to insert a foreign object into her body plus it was too expensive for us to afford that operation.

'So we started to research how we could do it differently.

'After our research we made the first prototype of the new bra.

‘We tried the first test of the prototype on Jelena.

'We thought the first result wouldn’t be visible for about two or three months but after just two days the results were very good – we understood we were on to something big.

'After seven days she [had] gone up a whole size. You only need to wear the bra for five minutes a day, three times a day and after just seven days you will have increased her bra size by one cup size.'

Pre-med student Andrena, from Miami, also tested the bra back in May and saw her breasts grow from 32B to 34C.

Andrena said: 'Obviously I was skeptical at first because it seemed too good to be true but after I used the bra it was just amazing - I've had to purchase new bigger bras and everything.

'Plus they've stayed the same which is what I was worried about - I thought it might just be a temporary increase.'

(Image: Enhance Bra)

Milan has brought the device - called the E bra - to the US where two American women have tested it.

Now it has been patented and tested on several women in Europe with stunning results.

Plastic surgeon Dr. Michael Salzheaur measured and took photographs of tester Sabrina Molinar - and confirmed her breast size increased.

Delighted Sabrina, a stage hand from West Palm Beach, Florida, told Mail Online: 'I was a 36B before but now I think I'd be a lot more comfortable in a C cup although I haven't been out to buy any new bras yet.

'I notice it most when I'm sleeping - I wake up and go, "Oh my boobs they hurt," because I'm not used to having them so I get uncomfortable.

'I definitely feel like I fill clothes a little better and it feels good. If I give somebody a hug I have to accommodate for them - it feels different and I'm just not used to them yet. There was a definite change for me.'

'Nothing was influencing it other than the bra,' she said.

'I'd love to try the bra out again to see if they will go even bigger.'

(Image: Enhance Bra)

Florida-based plastic surgeon Dr. Salzhauer is now calling for a rigorous clinical trial with a larger sample size.

'I can confirm that the tester’s breasts grew,' he explained.

'We took before and after pictures and we measured. There was an increase of volume of at least 50cc - maybe even 100cc.

'It was a small change compared to an implant - but they were bigger and they were fuller and closer together.

'Now I don't know if she gained weight or it was down to her monthly cycle or it was the bra itself.

'It would definitely need a more clinically controlled study to say for sure it was the bra that did it.

'But I can verify that her breasts were bigger than they were before she started wearing the bra.'

The bra is still in the very early stages of development and inventor Milan doesn't yet have any kind of deal with an underwear manufacturer.