Frankie Valli marries bride No. 4 at 89! The Four Seasons singer ties the knot with marketing executive Jackie Jacobs, 60, in Las Vegas and serenades her with hit song

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Frankie Valli, the lead vocalist of The Four Seasons, tied the knot with former CBS marketing executive Jackie Jacobs in Las Vegas on Monday.

The 89-year-old singer and the 60-year-old former CBS marketing executive made it official after 16 years of friendship.

The singer - who has been married three times previously - spoke to People about the special occasion, which took place at the Westgate Hotel, saying, 'It's terrific to have found love once again at this stage of my life.'

The couple said their wedding vows in an intimate ceremony with no other guests.

As they exchanged their vows, Valli's classic 1967 hit single Can't Take My Eyes Off Of You played softly in the background, and the groom sang along.

Can't take my eyes off you: Frankie Valli, the lead vocalist of Four Seasons, tied the knot with former CBS marketing executive Jackie Jacobs in Las Vegas on Monday

Still rockin': The singer, 89, and the former marketing executive, 60, made it official after 16 years of friendship and 8 years of dating 

The bride also opened up to People saying that although they met in 2007, they did not start dating until 2015.

She also told the story about how they met at a restaurant in Los Angeles while having dinner with friends.

'We kept in touch by phone until he called me and asked for a date in late 2015, and we've been together ever since,' she said.

The lead singer of the Four Seasons, a rock and roll and doo-wop band that originated in Newark, New Jersey, in 1960, is famous for his distinct falsetto voice.

Valli's success is undeniable, with over 35 hits on the Billboard Hot 100 singles chart, as a solo artist and with his group. 

Some of his most notable songs include 'Walk Like A Man,' 'Sherry,' '1963 (Oh, What a Night),' and 'Grease.'

The Rock and Roll Hall of Fame inducted Valli and the original members of the Four Seasons, Tommy DeVito, Nick Massi, and Bob Gaudio, into the Rock and Roll Hall of Fame in 1990.

This is the singer's fourth marriage. In 1957, when he was in his early twenties, he tied the knot with Mary Mandel, who already had a two-year-old daughter named Celia.

Happy: The singer spoke to People about the special occasion, which took place at the Westgate Hotel, saying, 'It's terrific to have found love once again at this stage of my life' 

Unique: The lead singer of the Four Seasons, a rock and roll and doo-wop band that originated in Newark, New Jersey, in 1960, is famous for his distinct falsetto voice

Romantic: The couple said their wedding vows in an intimate ceremony with no other guests. As they exchanged their vows, Valli's classic 1967 hit single Can't Take My Eyes Off Of You played softly in the background, and the groom sang along

The highest honor: The Rock and Roll Hall of Fame inducted Valli and the original members of the Four Seasons, Tommy DeVito, Nick Massi, and Bob Gaudio, into the Rock and Roll Hall of Fame in 1990

Together, they welcomed two daughters, Antonia and Francine. However, after 13 years, they ended their marriage and divorced in 1971.

Nine years after their divorce, Celia - who Frankie had raised as his own child - died in a accident when she fell from the fire escape of her New York City apartment building.

Then, just six months later, the couple's daughter Francine passed away from a drug overdose. 

Mary is reported to have died in 2007. 

In 1974, he tied the knot with Mary Ann Hannagan, four years after they first met when she was just 20 years old. 

The pair did not have any children together - and they divorced in 1982, with the details of their split kept closely under wraps. 

Later, he married Randy Clohessy in 1984, and they had three sons together - Francesco and then twin boys Brando and Emilio. The couple's marriage lasted for 20 years until they eventually separated in 2004.

Speaking to People magazine that same year, Frankie's friend Stewie Stone explained that the split had been especially 'tough' on the singer because he felt as though he wasn't getting the chance to spend enough time with their sons. 

Frankie has been married three times previously - first to Mary Mandel - and then again to Mary Ann Hannagan in 1974 (seen together in 1978), however they split in 1982

Later, he married Randy Clohessy in 1984, and they had three sons together (seen in 2003)

'This was a tough breakup because of the boys,' Stewie said. 'He doesn't get them as often as he'd like. It's tough when you have kids and they're not in the house anymore. You don't hear that noise.'

Stewie also expressed his surprise over the end of the 20-year union, admitting: 'I really don't know why it didn't work out. People don't get married to get divorced. Maybe people weren't meant to be together forever.' 

Speaking to DailyMail.com in 2011, Frankie shed some light on in relationship ethos, saying: 'If you’re in showbusiness, your partner has to understand they’ll always come second. Success requires your work must come first.

'Second doesn’t mean you don’t have a great love for this person, but she has to accept the long absences, that she’ll be raising the children and so on. Either that, or don’t have children and travel together. 

'I wouldn’t give up showbusiness for anybody. Unless I can make myself happy, how would I make anyone else happy?'

Interestingly at the time, Frankie insisted that he would never marry again, saying: 'The truth is that I don’t think I’m right for marriage. I could love somebody new, but I would rather she lived next door.' 

Although he is nearly 90, Valli still performs with his band and is set to take the stage this weekend in Atlantic City at Hard Rock Live at Etess arena. 

His 23 show tour will come to an end on June 30 in Chautauqua, New York.