Billionaire George Soros was married Saturday a lavish ceremony followed by a wedding party with guests including Bono and IMF chief Christine Lagarde.

Soros, the 83-year-old investor and philanthropist, married health-care consultant Tamiko Bolton, 42, in front of a small group of friends and family, including his five children, at his Bedford estate, which Soros bought in 2003 from “Jurassic Park” author Michael Crichton.

The intimate wedding ceremony was followed by a reception at 4:30 p.m. with more than 500 guests at the Caramoor estate in nearby Katonah. Guests included World Bank President Jim Yong Kim and foreign leaders, including Hendrik Toomas Ilves, president of Estonia; Ellen Johnson Sirleaf, president of Liberia; and Edi Rama, prime minister of Albania.

Also on hand were Gov. Cuomo, House Democratic Leader Nancy Pelosi and California Lt. Gov. Gavin Newsom, as well as hedge-fund titans Paul Tudor Jones and Julian Robertson, British businessman Jonathan Adair Turner, also known as Baron Turner of Ecchinswell, and Italian Foreign Minister Emma Bonino.

Wedding speakers included former UN Secretary-General Kofi Annan and Columbia Professor Anya Schiffrin, wife of Nobel Prize-winning economist Joseph Stiglitz.

A source told The Post, “There was no expense spared on the wedding party. Tamiko planned everything down to each tiny detail.” We are told that she was helped by wedding planner Marcy Blum, who also worked on LeBron James’ San Diego wedding just over a week ago, and top wedding and event designer Preston Bailey.

Guests at Caramoor were treated to a performance by Hungarian composer and conductor Iván Fischer, who created a new arrangement for the wedding, performed by the Budapest Festival Orchestra. Paris-based singer Mayra Andrade also performed with the Harris Lane Orchestra. Chef Bo Bech of the Geist Restaurant in Copenhagen prepared the meal.

Bolton, who was raised in California and founded an Internet-based dietary-supplement business, wore a dress by Lebanon-born designer Reem Acra, whose gowns are favored by stars including Angelina Jolie and Jennifer Lopez.

This will be the third marriage for Soros, who has a net worth of $20 billion according to Forbes, and the second for Bolton.

The couple met at a dinner party in 2008 and their engagement was announced in August 2012. It is understood there is a prenuptial agreement, and Soros’ lawyer, William Zabel, told Page Six last year, “Soros will leave the bulk of his estate to charity but he intends to provide generously for his wife.”

Saturday night was the highlight of three days of festivities that began Friday with a dinner at Le Bernadin in Manhattan followed by a cocktail reception at the Museum of Modern Art. Sunday, Andrade and Roma ensemble Via Romen will perform at a Sunday brunch for the newlyweds and a few hundred guests, also at Caramoor.