Blake Lively flashes her underwear at the White House

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Blake Lively Suffers Wardrobe Whoops at State Dinner

Blake Lively had a mini wardrobe slip at the White House!

The 28-year-old actress hit the White House State Dinner for Canada with her husband, Ryan Reynolds, on Thursday night and she accidentally had a little dress slip. The stunning star was walking into the event in a glimmering, silver dress with long sleeves and a thigh-high slit in the front. As Lively moved, the dress unfortunately moved too and revealed her SPANX undergarments.

Thankfully, her undies were of the nude variety and looked a lot more like cycling shorts than tiny knickers. Crisis averted!

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White House State Dinner Blake Lively
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Blake Lively flashes her underwear at the White House
Actor Ryan Reynolds and Blake Lively arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
Actor Ryan Reynolds and Blake Lively arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
Actor Ryan Reynolds and Blake Lively arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
WASHINGTON, DC - MARCH 10: (AFP OUT) Actors Ryan Reynolds and Blake Lively arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: (AFP OUT) Actor Blake Lively arrives for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
Actor Ryan Reynolds and Blake Lively arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
WASHINGTON, DC - MARCH 10: (AFP OUT) Actors Ryan Reynolds and Blake Lively arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Actors Ryan Reynolds and Blake Lively arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: (AFP OUT) Actors Ryan Reynolds and Blake Lively arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
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Lively and her Canadian hubby definitely weren't the only big names rubbing elbows with the Obamas and Canadian Prime Minister Justin Trudeau. Mike Myers, Sandra Oh and more popular stars also attended.

Despite the undie snafu, Lively looked absolutely gorgeous at the event. She paired her silvery gown with a set of chandelier earrings and polished off her look with long, blonde locks and pink lips.

Well done, Blake.

PHOTOS: Inside the White House State Dinner

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White House State Dinner - Canada
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Blake Lively flashes her underwear at the White House
Singer Sara Bareilles and Jennifer Bareilles arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / Chris KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
WASHINGTON, DC - MARCH 10: Actress Sandra Oh and Lev Rukhin arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
US President Barack Obama (2L) and first lady Michelle Obama (L) greet Canadian Prime Minister Justin Trudeau (R) and Sophie Gregoire-Trudeau (2R) before a state dinner at the White House March 10, 2016 in Washington, DC. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
WASHINGTON, DC - MARCH 10: Todd Stern, Special Envoy for Climate Change, U.S. Department of State and Jennifer Klein arrive for the State Dinner at the White House on March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10:Lorne Michaels, Executive Producer, Saturday Night Live arrives for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Grégoire Trudeau of Canada at the White House on March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Andrew Liveris, Chairman & Chief Executive Officer, The Dow Chemical Company, and Paula Liveris arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Grégoire Trudeau of Canada at the White House on March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Beth Shaw, Personal Finance Commentator & Member of the Presidents Advisory Council on Financial Capability for Young Americans, and Adam Shaw arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Grégoire Trudeau of Canada at the White House on March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Representative Susan Davis (D-CA) and Steven J. Davis arrive for the State Dinner at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Audie Cornish-Emery, National Public Radio and Theodore Emery arrive for the State Dinner at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Robert Klein II, President, Klein Financial Corporation & Chairman Emeritus, California Institute of Regenerative Medicine, arrives for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Grégoire Trudeau of Canada at the White House on March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Michael Alter, President, The Alter Group, and Ellen Alter arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Grégoire Trudeau of Canada at the White House on March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Marvin Nicholson, Special Assistant to the President, Trip Director & Personal Aide to the President, and Helen Pajcic arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Grégoire Trudeau of Canada at the White House on March 10, 2016 in Washington, DC. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: House Democratic Leader Nancy Pelosi (D-CA) and Paul Pelosi arrive for the State Dinner at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Singer-songwriter Sara Bareilles performs during a State Dinner at the White House March 10, 2016 in Washington, D.C. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and First Lady Sophie Gregoire Trudeau of Canada. (Photo by Olivier Douliery-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Ambassador to Canada Bruce Heyman and Vicki Heyman arrives arrive for the State Dinner in honor of Prime Minister Trudeau and First Lady Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Roberta Jacobson, Assistant Secretary of State for Western Hemisphere Affairs, U .S. Department of State and Jonathan Jacobson arrive arrive for the State Dinner in honor of Prime Minister Trudeau and First Lady Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
Singer Sara Bareilles and Washington Performing Arts Children of the Gospel Choir perform after a state dinner at the White House March 10, 2016 in Washington, DC. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
WASHINGTON, DC - MARCH 10: Alexander Macgillivray, Deputy Chief Technology Officer, The White House, and Shona Crabtree arrives arrive for the State Dinner at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Actor Mike Myers arrives arrive for the State Dinner in honor of Prime Minister Trudeau and First Lady Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Former NBA player Grant Hill and member of The Presidents Council on Fitness, Sports & Nutrition and Tamia Hill arrive for the State Dinner at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
Irwin Jacobs, Co-founder, Qualcomm & Chair of the Board of Trustees, Salk Institute and Joan Jacobs arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / Chris KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
WASHINGTON, DC - MARCH 10: President Barack Obama and Prime Minister Justin Trudeau of Canada exchange toasts during a State Dinner at the White House March 10, 2016 in Washington, D.C. Prime Minister Trudeau is on an official visit to Washington. (Photo by Olivier Douliery-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: President Barack Obama speaks during a State Dinner at the White House March 10, 2016 in Washington, D.C. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and First Lady Sophie Gregoire Trudeau of Canada. (Photo by Olivier Douliery-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Wayne Jordan, Executive, Founder & Principal, Jordan Real Estate Investments, and Quinn Delaney arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Sasha Obama attends a State Dinner at the White House March 10, 2016 in Washington, D.C. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and First Lady Sophie Gregoire Trudeau of Canada. (Photo by Olivier Douliery-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: First Lady Sophie Gregoire Trudeau of Canada attends a State Dinner at the White House March 10, 2016 in Washington, D.C. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and First Lady Sophie Gregoire Trudeau of Canada. (Photo by Olivier Douliery-Pool/Getty Images)
WASHINGTON, DC - MARCH 10: Lorne Michaels, Executive Producer, Saturday Night Live, and Alice Michaels arrive for the State Dinner in honor of Prime Minister Trudeau and Mrs. Sophie Trudeau of Canada at the White House March 10, 2016 in Washington, DC. Hosted by President and First Lady Obama, the dinner is in honor of Prime Minister Justin Trudeau and Sophie Gregoire Trudeau of Canada. (Photo by Ron Sachs-Pool/Getty Images)
Canadian Prime Minister Justin Trudeau speaks during a state dinner at the White House March 10, 2016 in Washington. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
US President Barack Obama (L) and Canadian Prime Minister Justin Trudeau toast during a state dinner at the White House March 10, 2016 in Washington, DC. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Actor Ryan Reynolds and Blake Lively arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
US President Barack Obama (C) speaks between Canadian Prime Minister Justin Trudeau and his wife Sophie Gregoire-Trudeau during a State dinner at the White House in Washington on March 10, 2016. / AFP / Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Actor Ryan Reynolds and Blake Lively arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
US Senator Patrick Leahy (D-VT) and Marcelle Leahy arrive at a State Dinner in honor of Canadian Prime Minister Justin Trudeau at the White House in Washington on March 10, 2016. / AFP / CHRIS KLEPONIS (Photo credit should read CHRIS KLEPONIS/AFP/Getty Images)
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