Jennifer Aniston's Fiance Justin Theroux Wears $1,100 Designer Jeans

It's no secret that a superstar like Jennifer Aniston has expensive taste, but apparently her affinity for the luxurious has rubbed off on her fiance, actor and writer Justin Theroux.

Just as Aniston is known for her laid-back, simplistically-chic wardrobe, Theroux has made a habit of wearing dark, tight-fitting clothes that sometimes lean toward a biker look. But his threads don't come cheap.

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When it comes to clothes, Theroux likes to indulge. One of his favorite things to buy are designer jeans from high-end house Balmain, which sell for a whopping $1,100 per pair, according to a new report from The National Enquirer.

"Justin loves clothes, and he knows that when you're standing next to Jen Aniston, you have to look really cool," said a friend close to the couple. "So he buys Balmain, which ain't cheap! Sure it's an astounding price to pay for jeans, but hey - he's marrying Jennifer Aniston."

Not that Theroux is a stranger to splurging on lavish purchases for himself or Aniston. Earlier this year, Theroux plunked down some serious cash for a gift for Aniston at the Beverly Hills location of Tiffany & Co.

Theroux wandered into the store just to browse, with no plans to buy anything in particular, reports said. But as he shopped, he quickly found something that he knew would be the perfect gift for his wife-to-be — a "platinum heart pendant covered with sparkling sapphires." But the price tag — a whopping $15,000 — startled Theroux a bit.

"Justin thought the necklace was a couple of thousand - and went into shock when the saleswoman told him it was just more than $15,000," a sourced told the Enquirer. "He took a big gulp, pondered a minute, then said, 'Oh what the hell!' He told the woman to wrap the bauble, saying he'd save it for a special occasion."