Middleton paired the piece with a cream-colored Roland Mouret gown and wore her hair in a casual ponytail — a departure from the previous evening, when she showed off a glittery tiara (a family heirloom valued at quite a bit more than $35) for an event at Buckingham Palace.
More on Yahoo Shine: Extra, Extra! Kate Middleton Has Gray Hair, Too
It's no surprise that shoppers swooped in to buy out the necklace — Middleton's ability to excite and influence the fashion masses is a phenomenon dubbed the "Kate Effect." When the duchess posed for her engagement photo with Prince William in 2010, she wore a blue Issa London wrap dress, which sold out in 24 hours. In order to keep up with the demand (stillRead More »from Kate Middleton's $35 Zara Necklace is (Unsurprisingly) Sold Out