Happy Valentine's Day! Michael Bublé's model wife Luisana Lopilato unveils new lingerie range for Ultimo

Ultimo's latest lingerie campaign starring Luisana Lopilato promises to set pulses racing. Unveiled just in time for Valentine's Day the blonde actress, who is the wife of singer Michael Bublé, models one of the brand's most sought-after pieces.Originally worn by Julia Roberts in the 2000 film Erin Brockovich the bust boosting OMG bra has been relaunched.

Michael Buble's wife Luisana Lopilato shows off her flawless figure for Ultimo

Actress and model Luisana Lopilato models the lace OMG Plunge Bra, £28.00 - the same design worn by Julia Roberts in the 2000 film Erin Brockovich - and lace thong, £12.50

the gel filled bra, which is said to boost cleavages by two cup sizes, was responsible for capitulating Ultimo to international success. Cosmetic surgeons even recommended it to patients who did not want to undergo surgery. Commenting on the design the 40-year-old businesswoman said: 'The Miracle OMG is how it all started and still remains one of our best products.'The Miracle OMG is a real showstopper and when you have worn it once you will be amazed – not onlyby the result but also how great it feels to wear. It's not called the OMG for nothing.'

The OMG bra was originally worn by by Julia Roberts in the 2000 film Erin Brockovich

, 24, who forged a successful career as an actress in her home country of Argentina,signed up as the face of the brand for a two-year stint in October lastyear. Since then, sales have rocketed by 37 per cent - a spike that Mone attributes in part to the 'Lopilato effect'.Commenting on the brand’s new Miracle OMG Lace bra, a limited edition design of the original gel filled plunge worn by Julia Roberts, Luisana added: 'This bra makes your cleavage look fantastic and it’s so comfortable to wear – it really gives the wow factor.'MichelleMone, who was awarded an OBE in 2010 for her services to business, gavethanks to Luisana and the other Ultimo models (Tamara Ecclestone and Amy Childs also modelled for the brand in 2011), and promised that 2012 will be even bigger.Atthe time, she said: 'This year we have unveiled some amazing images designed to best showcase our collections and it has been fantastic to be involved with some incredible women.''SigningMichael Buble’s wife Luisana is one of our biggest international stars and the response we have had has been phenomenal.'It took me a long time to get her but I refused to give up.'The actress has over one million followers on Twitter, and has massive global appeal - and on a very superficial level, it is not hard to see why. Luisana modeled other pieces from the collection launched in time Valentine's day. Thelatest lingerie line features plenty of seductive black lace, tempered with macarón shades of pistachio green and dusky pink.

Luisana signed up as the face of the lingerie company for a two-year stint in October lastyear

The retro-inspired Spy collection is, says Ultimo, 'sophisticate meets bombshell', creating a seductive silhouette. Michelle Mone OBE said: 'Women want to feel confident in their underwear by choosing a style of lingerie that accentuates all the right places. 'Luisana is a natural beauty and I'm delighted to have her on board for two years.'Thenew collection is not only very sophisticated and feminine but feels comfortable as well so that you have that confidence from the inside out.'Luisana, added: 'I loved shooting the Ultimo campaign and usually have to wear plain underwear when I’m filming so it was incredible to be wearing such gorgeous lingerie.'I love the colour of Evangeline – the mint green really highlights my skin tone but the lace gives it that sexy edge.'The high-waisted shorts of Spy create gorgeous feminine curves which make you feel amazing.'Butwhile her company - founded 16 years ago with her husband Michael - goes from strength to strength, sadly, Ms Mone's marriage has come to anend. Ms Mone made headlines at the end of last year when it was revealed she and her husband of 19 years were to divorce. The Scottish entrepreneur announced her separation from businessman Michael Mone in a statement issued just before Christmas.