It's only been four months since pop star Taylor Swift met Scottish DJ Calvin Harris and the two started dating. But rumors say Harris is now shopping for the perfect engagement ring and money is not an object. 

While fans followed Swift's love story with Harris unfold over the past months, reports are surfacing that the couple will tie the knot really soon.

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Sources said Calvin is likely to pop the question anytime and he is willing to spend up to $500,000 on the perfect diamond engagement ring, Mirror reported.

"Taylor loves chunky rings, so he wants to go big. He's looking at cushion-cut center stones and is willing to drop at least $500,000!" a source told the news site. The ring is said to be a 10-carat diamond ring.

Now fans are curious, if and when he proposes, where Harris plans on doing it, "He's on the fence because Taylor has so many favorite places," the source said. "He thought of romantic Paris or Italy, but now he's leaning toward Nashville, where she has one of her homes," the source added.

The pop star and the DJ, fans say, are one of the sweetest couples in Hollywood today, but they are also one of the highest paid. Now this leaves critics speculating on how their prenup agreement will be like, if they will have one.

"Taylor's worth over $200 million and he's worth about half that. Taylor and Calvin plan to be together forever, but when you have as much money as they do, you have to be practical," Hollywood Life reported. The full interview details will be at the August 10 issue of Life & Style.

Meanwhile, Swift is busy marketing her exclusive merchandise designed for the Chinese market via an online shopping site. She hopes to battle counterfeit products sold in the country by offering original merchandise conveniently available.

"Nihao, it's Taylor Swift. Be sure to check out my new authentic 'merch,' now available in China," the pop star appealed in a commercial as reported by CBS News. 

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