Reese Witherspoon seems to be a down-to-earth non-diva, like she’d browse the bargain rack at The Gap just as easily as she’d wear couture. But that doesn’t mean she doesn’t have expensive tastes, as her new fiance Jim Toth is finding out. Fortunately, Jim apparently doesn’t mind and makes enough money as an agent (for Robert Downey Jr. and Tobey Maguire, amongst others) to treat Reese in the manner she likes.

Jim Toth’s dream came true when his girlfriend of less than a year, Oscar-winning actress Reese Witherspoon, accepted his Christmas proposal. And he spares no expense in treating her as an A-lister should be treated. “Jim won’t let Reese pay for anything,” a friend of the Hollywood agent tells In Touch.

In a town where extravagant rings are the norm, Jim insisted on the best [engagement ring] money could buy for Reese. “He was drawn to the rarity of the stone,” says jeweler William Goldberg, who custom-designed the spectacular 4-carat sparkler.

While half a million may seem like small change to Reese, 34, who raked in $32 million in 2010 according to Forbes, the ring is an expression of the highly dedicated Creative Artists Agency employee’s love for Reese.

…Now that he’s marrying one of Hollywood’s highest earners, Jim wants to provide her with the things he feels she deserves. “Reese is one of those ladies you need to spoil,” explains the friend, although a rep for Reese denies the story. “She is not materialistic, but she is accustomed to the guy paying for things — she’s Southern and traditional that way.”

And chivalrous Jim is more than happy to oblige. “He opens doors for her, and he holds her hand,” notes the friend. “Jim thinks Reese is so amazing and believes she deserves the world. He knows she is a great woman and mom, so he tries to show her that in every way possible.”

[In Touch Weekly, print edition, February 7, 2011]

Although they say Reese’s rep denies it, this story is very sweet, making me think the rep isn’t entirely unhappy about it.

In Touch estimates that Jim spent $450,000 on Reese’s engagement ring. It’s a rare Ashoka cut-diamond — “only 10 percent of gems can be cut in the unique shape.”

He also reportedly spends $26,000 for front row Lakers seats; $15,000 on Reese’s favorite restaurants like Giorgio Baldi, Shutters and Red O; plus, he drives a leased $200,000 Mercedes-Benz.

These two seem like a good couple. Actresses usually have better luck with men who work in the industry but who aren’t actors, like Julia Roberts and her cinematographer husband. There’s less competition for the spotlight, I think, and there aren’t as many ego clashes. Hopefully, the money won’t run out!

Photos courtesy of Fame & WENN.