Oprah Winfrey tweeted after Lupita Nyong'o picked up the Best Supporting Actress Oscar:
Former President Bill Clinton and chat show host Oprah Winfrey were among the recipients of the Presidential Medal of Freedom award today.
President Obama presented the award to 16 prominent Americans during a ceremony at the White House.
The award, regarded as the nation's highest civilian decoration, was established by John F Kennedy less than a year before his death.
Obama said the ceremony was one his favourite events of the year, and claimed this year's ceremony was "just a little more special" as it is 50 years since President Kennedy created the award.
President Obama will be joined by Bill and Hilary Clinton at a ceremony at Kennedy's grave site later on tonight as the nation prepares to honour the President's legacy on the 50th anniversary of his assassination.
Chat show queen Oprah Winfrey admitted she had a near-nervous breakdown earlier this year.
Asked about reports that she had felt symptoms of a breakdown, Winfrey told Access Hollywood, "That is true".
Winfrey said she only became aware of it when she interviewed Jason Russell of the Kony 2012 movement - who suffered a very public breakdown.
“I was sitting and listening to Jason Russell describe his symptoms ... saying, ‘Um, this sounds pretty familiar to me," Winfrey said. “I mean, I wasn’t ready to go run naked in the streets. Let’s make that very clear.”
Lindsay Lohan declared that her recent stint in rehab - her sixth - has put her on the road to recovery in an interview with Oprah Winfrey.Read the full story ›
Oprah Winfrey said she was sorry a media frenzy emerged after saying she experienced racism during a trip to Switzerland. Speaking at a film premier she said:
I think that incident in Switzerland was just an incident in Switzerland. I'm really sorry that it got blown up. I purposefully did not mention the name of the store. I'm sorry that I said it was Switzerland.
I was just referencing it as an example of being in a place where people don't expect that you would be able to be there.
It's not an indictment against the country or even that store. It was just one person who didn't want to offer me the opportunity to see the bag.
So no apologies necessary from the country of Switzerland. If somebody makes a mistake in the United States do we apologize in front of the whole country? No!
The luxury shop Trois Pommes has denied discriminating against Oprah Winfrey, who asked to look at a "Jennifer" purse, designed by Tom Ford and named for actress Jennifer Anison.
The owner put the incident down to a language barrier. "This is an absolute classic misunderstanding," shop owner Trudie Goetz told Reuters.
The sales assistant wanted to show Winfrey that the purse was also available in other materials, which may have given the TV host the impression the shop didn't want to sell her the purse, Goetz said.
"Of course that's not the case. Who wouldn't want to sell a purse for 35,000 francs?" Goetz said.
Switzerland's national tourism office has apologised to Oprah Winfrey after the chat show queen claimed she faced an act of racism in the country.
Winfrey, one of the world's richest women, said a shop assistant at an upmarket boutique in Zurich refused to show her a handbag because it was "too expensive."
A spokeswoman for the Swiss tourism office told the Associated Press, "We are very sorry for what happened to her."
An apology was also posted on Twitter saying, "This person acted terribly wrong."
US talk show host Oprah Winfrey has revealed that a shop attendant refused to serve her during a recent trip to Switzerland in what she has said was an act of racism.
She says she was shopping in an upmarket handbag boutique in Zurich last month when she was told that a bag on display was "too expensive" for her, before being shown cheaper ones.
The billionaire says she walked out of the shop calmly, but that the incident shows that racism "still exists".
Switzerland, where the Oprah Winfrey Show is not broadcast, has previously attracted criticism over its policies on mosques and asylum-seekers.
President Barack Obama is to bestow America's highest civilian honour on Oprah Winfrey and former president Bill Clinton.
The pair will receive the Presidential Medal of Freedom at a ceremony at the White House later this year.
The medal is presented to individuals who have made "especially meritorious contributions to the security or national interests of the United States, to world peace, or to cultural or other significant public or private endeavours."
Ms Winfrey and Mr Clinton will join 14 other recipients, including activist Gloria Steinem and former senator Richard Lugar. Also being honoured is Ben Bradlee, the editor who oversaw Washington Post coverage of Watergate.
Former senator Daniel Inouye of Hawaii and Sally Ride, the first woman astronaut in space, will receive the medals posthumously.
President John F Kennedy created the medal of freedom in an executive order signed 50 years ago. The White House says more than 500 people have been presented with the honour to date.