Niemi and her jeweler boyfriend, who met via mutual friends in 2012, exchange vows in front of more than 50 guests in Palm Beach, Florida.
Niemi sported an Oscar de la Renta dress while DePrisco opted for an Ermenegildo Zegna outfit at the nuptials. The wedding venue was decorated with roses and green/white hydrangeas. A string quartet played Haydn and Mozart.
"What I most look forward to on my wedding day is walking up, standing at our altar, and looking into his most incredible, twinkling eyes," Niemi told the magazine two days prior to her big day. "I cannot think of a bigger treat than that."
Niemi additionally said that she could not wait to chat with the guests at the reception. "I have some hilarious friends. I'm sure there will be some fun toasts! Later on we'll dance to everything from Michael Buble and Steve Tyrell, to 70's classics, to current hits, with a big dash of romance thrown in," she gushed.
Niemi was previously married to Swayze for 34 years until his death in 2009. The star, who met DePrisco via mutual friends in 2012, got engaged last December.