Paris Hilton's Boyfriend Is 10 Years Younger Than She Is! Isn't It Time For The Socialite To Grow Up?

Sure, Paris Hilton's model boyfriend, River Viiperi, is insanely hot. But the huge age difference - she's 31, he's 21 - is leading fans to ask if the perpetually young socialite will ever get her act together and grow up.

For the last decade, the great-granddaughter of hotel mogul Conrad Hilton has jumped from one relationship to another, one project to the next. But with an estimated net worth of $100 million, Hilton doesn't seem to be concerned about settling into anything, much less marriage.

Nevertheless, Hilton has launched a successful fashion line and multiple perfume brands - her fragrances have reportedly earned $1.5 billion. There are 42 Paris Hilton Stores worldwide, which reportedly earn the heiress $10 million a year in product sales.

On Monday night, Hilton surprised fans by showing up at the Mango runway show in Barcelona to show her support for her new boy toy. But the blond bombshell was unusually quiet, slipping in and out of the show without much fanfare.

Clad in a red suit, she watched Viiperi strut this stuff. Viiperi, who Hilton started dating in September 2012 , has caught the eye of designers like Ralph Lauren and Calvin Klein, and has been snapped by photog Mario Testino for top fashion magazines.

The son of a Spanish father and a Finnish mother, Viiperi has been hailed as one of the top male models. But is he really a responsible choice for a 31-year-old heiress?

Ten years ago, Hilton rose to super-stardom when she and her then-BFF Nicole Richie starred in one of the first big reality shows, "The Simple Life." At the time both women came off as, shall we say, a bit ditsy.

The years that followed didn't help Hilton's reputation. Shortly before "The Simple Life" premiered, a sex tape of hers leaked, and it circulated for years afterward. Hilton's partying ways and choice of friends (Britney, for one) landed her in the tabloids time and time again.

More than anything, though, Hilton was criticized for putting her foot in her mouth time and time again. Here's a list, à la Yahoo, of Hilton's most idiotic quotes.

Paris Hilton Quote #1:"Wal-Mart... do they like make walls there?"

Paris Hilton Quote #2:"I don't really think, I just walk."

Paris Hilton Quote #3: "What's a soup kitchen?"

Paris Hilton Quote #4: "The music has a sexy vibe. That's my brand - what people what from me."

Paris Hilton Quote #5: "Every woman should have four pets in her life. A mink in her closet, a jaguar in her garage, a tiger in her bed, and a jackass who pays for everything. "

Paris Hilton Quote #6: "I'm like an American princess."

Paris Hilton Quote #7: "I don't think there's ever been anyone like me that's lasted. And I'm going to keep lasting."

Paris Hilton Quote #8: "I'm an actress, a brand, a businesswoman. I'm all kinds of stuff."

Paris Hilton Quote #9: "The only rule is don't be boring and dress cute wherever you go. Life is too short to blend in."

Paris Hilton Quote #10: "A true heiress is never mean to anyone - except a girl who steals your boyfriend."

So we ask you: Isn't it time for Paris Hilton to grow up?