(L-R) Republic of Korea first lady Kim Yoon-ok, U.S. first lady Michele Obama, Republic of Korea President Lee Myung-bak and U.S. President Barack Obama pose for photographs on the North Portico of the White House before attending the state dinner on Oct. 13, 2011.
- [Alex Wong/Getty Images]

Facebook Chief Operating Officer Sheryl Kara Sandberg arrives for the state dinner in honor of South Korea's President Lee Myung-Bak and his wife Kim Yoon-Ok on Oct. 13, 2011.
- [MANDEL NGAN/AFP/Getty Images]

U.S. Treasury Secretary Timothy Geithner and his wife Carole Geithner arrive for the state dinner in honor of South Korea's President Lee Myung-Bak and his wife Kim Yoon-Ok on Oct. 13, 2011.
- [MANDEL NGAN/AFP/Getty Images]

Billie Jean King (L) and Ilana Kloss arrive for the state dinner in honor of South Korea's President Lee Myung-Bak and his wife Kim Yoon-Ok on Oct. 13, 2011.
- [MANDEL NGAN/AFP/Getty Images]

Actor John Cho arrives for the state dinner in honor of South Korea's President Lee Myung-Bak and his wife Kim Yoon-Ok on Oct. 13, 2011.
- [MANDEL NGAN/AFP/Getty Images]

U.S. President Barack Obama and South Korean President Lee Myung-bak toast each other in the East Room of the White House.
- [Roger L. Wollenberg-Pool/Getty Images]

U.S. President Barack Obama (R) and South Korean President Lee Myung-bak raise their glasses at the state dinner.
- [Roger L. Wollenberg-Pool/Getty Images]