Erin Foster's New Year's Eve Wedding Featured a Flash Mob

It's official: Erin Foster is married and her New Year's Eve wedding was the coolest place to ring in the new year. Complete with a flash mob, surprise performances by Katharine McPhee and Kate Hudson, and an outfit change, here's everything we know about Foster's Tennessee wedding to Simon Tikhman.

The couple brought their guests to Nashville for the nuptials and said "I do" at Saddle Wood Farms. For the ceremony, Foster wore a fitted silk gown with sheer balloon sleeves by bridal designer Danielle Frankel and accessorized with a long train. Tikhman also wore white, sporting a white jacket and black pants by Todd Snyder.

The bride shared several shots taken by wedding photographer Allan Zepeda on Instagram two days after the nuptials. "I got to marry the love of my life, and hopefully will never have to look at a seating chart again for as long as I shall live," she wrote.

Foster was escorted down a candlelit aisle by her father, David Foster. Under a grand floral covered chuppah, Foster and Tikhman exchanged vows. Following the Jewish ceremony, guests made their way to a romantic reception venue, which was covered in greenery and filled with a mix of rectangular and circular tables.

Following the couple's first dance, Foster changed into a strapless belted dress with a sheer jacket—another creation by Danielle Frankel. She and the other guests accessorized with typical New Year's Eve garb, including gold and silver "2020" glasses.

During the reception, Tikhman surprised Foster with a dance, which quickly turned a choreographed number with the groomsmen. But the surprise didn't there. Soon, Foster's older sister Sara and a few others joined the dance, creating a full-blown flash mob!

Guests were also treated to a performance by Foster's stepmom Katharine McPhee, who wed David Foster in June. Kate Hudson even took the mic to sing her rendition of "Shallow."

Actor Jonah Hill even found himself behind the bar, mixing drinks for guests, including the bride herself.

While Foster's sister Sara previously joked she was going to wear a white wedding dress by bridal designer Monique Lhullier to the nuptials, she instead wore a sparkling strapless silver gown with a black sash by Dolce and Gabbana.

To finish the night, guests we ushered outside to enjoy a fireworks show and everyone reconvened the next morning for a post-wedding brunch. The newlyweds are currently heading off on their honeymoon but according to Foster's Instagram story, she is anxious to share more details of the night. "I have so much to recap. Like for instance, I'm married. En route to our honeymoon and service is terrible and feeling desperate to share every detail," she wrote.

We'll just be glued to our phones waiting to hear from the bride again, but based on the details we've already seen, this wedding was definitely the party of the year!