ismarykatebuyingherownengagementringImage courtesy of Getty

Diminutive fashion mogul Mary-Kate Olsen has been spotted trying on engagement rings at the posh Neil Lane boutique in L.A., sparking rumours that she and her boyfriend Olivier Sarkozy, 44, are planning to tie the knot. "She really likes cushion-cut diamonds," a source told Page Six. "All of them are over 5 carats." Apparently, price isn’t an issue, and everything the twin has had her eye on clocks in at over $100,000.

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