Frankie Valli, 89, shows off wedding ring as she is first seen after marrying Jackie Jacobs, 60

Frankie Valli, the lead singer of The Four Seasons, was first seen wearing his shiny new wedding ring after he tied the knot with Jackie Jacobs in Las Vegas on Monday.

The 89-year-old musician showed off his new piece of jewelry while running errands in Los Angeles on Wednesday, just days after his legal union with the 60-year-old former CBS marketing executive.

The singer — who made it official with the woman nearly three decades his junior after 16 years of friendship — was spotted picking up his dry cleaners in sunny Southern California.

He was casually dressed and no piece was more important than his shiny wedding band that he wore on his left ring finger.

Frankie kept his look simple in a blue zip-up jacket over black trousers and matching dress shoes.

His gray locks were tousled and combed back as he wore a little scruff and tinted glasses.

The singer – who has been married three times before – recently spoke to People about the special occasion that took place at the Westgate Hotel and said: ‘It’s great to have found love 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.

The bride also opened up to people saying that although they met in 2007, they didn’t start dating until 2015.

She also shared the story of how they met in a restaurant in Los Angeles while having dinner with friends.

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

The lead singer of the Four Seasons, a rock and roll and doo-wop band formed in Newark, New Jersey in 1960, is known for his distinctive 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 are ‘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, in his early twenties, he tied the knot with Mary Mandel, who already had a two-year-old daughter named Celia.

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 had raised Frankie as his own child — died in an accident when she fell off the fire escape of her New York City apartment building.

Then, just six months later, the couple’s daughter, Francine, died of a drug overdose.

Mary is said to have passed away 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 couple had no children together – and they divorced in 1982, keeping the details of their split closely secret.

He later married Randy Clohessy in 1984, and they had three sons together – Francesco and then twins Brando and Emilio. The couple’s marriage lasted 20 years until they finally separated in 2004.

Speak against People magazine that same year, Frankie’s friend Stewie Stone explained that the split had been particularly “tough” on the singer as he felt he wasn’t getting the chance to spend enough time with their sons.

“This was a tough breakup because of the guys,” Stewie said. “He doesn’t get them as often as he’d like. It’s tough when you have kids and they’re gone. You don’t hear that sound.’

Stewie also expressed surprise at 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 relationship ethics, saying, “When you’re in show business, your partner needs to understand that they always come second. Success requires your work to come first.

“Secondly, it doesn’t mean you don’t have great love for this person, but she has to accept the long absence, that she will raise the children, and so on. Either that, or have no kids and travel together.

“I wouldn’t give up show business for anyone. How could I make someone else happy unless I can make myself happy?’

Interestingly enough, Frankie insisted at the time that he would never marry again, saying, “The truth is I don’t think I’m fit to get married. I could love someone new, but I’d rather she lived next door.’

Although he is almost 90, Valli is still performing with his band and will take the stage this weekend in Atlantic City at Hard Rock Live at the Etess arena.

His 23-show tour ends June 30 in Chautauqua, New York.