The 42-year-old singer managed to fully expose her ample bosom during an interview with German television.
Diva: Lopez has been touring Europe to promote her latest album 'Love?' and has done a number of TV interviews
Unsuspecting: Jennifer is in a jovial mood as she is greeted by the show's presenter Thomas Gottschalk
Whoops! Lopez is relieved that her dress hasn't blown up but is unaware that her breast has popped out
It all started when the signer arrived on a horse drawn carriage for the live filming of 'Wetten das...?' - German for 'wanna bet that' - at the Coliseo Balear bull fighting arena in Palma de Mallorca, Spain.
The singer looked gorgeous in a floor-length beige and black dress with a matching head band and the crowds screamed as she waved.
Windy: TV presenter Thomas Gottschalk runs to Jennifer's rescue but little do they know she's about to reveal even more flesh
Superstar: Fans at the bull fighting arena went crazy as Jennifer performed her hit On the Floor
But her flowing outfit, which was barely held together with a large brown belt, was probably not suited and kept whipping up in the windy weather.
As she greeted the show's presenter Thomas Gottschalk and Formula One champion Sebastian Vettel a huge gust of wind started to blow her flowing dress up.
Almost immediately Gottschalk can be seen scuttling over to her in a bid to try and keep the ensemble down.
And Lopez sighs with relief as she manages to escape showing too much flesh.
But she didn't suspect she was about to commit an even greater faux pas.
Glamorous: The singer talks to host Gottschalk and Formula One World Champion Sebastian Vettel
As she sits down the singer's entire breast pops out, leaving her completely exposed.
Completely oblivious to what just happened, the singer carries on with the interview unaware that she has just given Gottschalk and Vettel an eyeful.
After discussing her latest album and revealing a bit about her personal life, she then went on to sing her hit song, On The Floor.
The interview was just one of many that she has been doing in Europe and was recently spotted with her mum Guadaulpe in Paris.
Last year Lopez spoke about how having her own children helped the pair mend their own troubled relationship.
Dressed casually in a grey cardigan and jeans, J-Lo didn't let the rain dampen her spirits as she did a bit of shopping with her mum.
Hollywood royalty: Jennifer made a grand entrance and was brought into the arena on a horse-drawn carriage
The Diva, who is married to Marc Anthony, also recently revealed in an interview with the BBC that she might not be returning American Idol.
Lopez, who judged alongside Steven Tyler and Randy Jackson, announced in April that she was keen to start a new show to try and find undiscovered talent in Latin American countries with her husband.
The show, called Que Viva!, means that Lopez, who has two children, will be able to spend more time with her family.
Motherly love: J-Lo's mother Guadalupe with her daughter in Paris while she promotes her new album in Europe