She, too, declined to discuss anything political. Wearing a black gown and a diamond necklace, she wouldn't say if the jewelry came from Tiffany & Co., where the couple reportedly has an account.

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Asked who made it, she would only say: “A very talented jeweler.”

The annual Kennedy Center Honors is one of the biggest gala performances in Washington. Every year, five artists from the performing arts are honored with a show that airs later in the month on CBS. The event draws several celebrities and politicians from both parties. President Obama and first lady Michelle ObamaMichelle LeVaughn Robinson ObamaObama plans to use Netflix deal to stop political divisiveness Michelle Obama tweets out first look at cover of new book Netflix surpasses Comcast in market value MORE also attended.

Even with the political-heavy crowd, Gingrich wouldn't be drawn into a discussion on the presidential campaign. Asked later in the evening about a report that rival Herman Cain — who suspended his campaign Saturday — would endorse him on Monday, Gingrich declined to comment.

Instead, he talked about the performance, saying how much he enjoyed Stephen Colbert's introduction of Yo-Yo Ma.

Asked if the comedian had invited him to appear on his show "The Colbert Report" report, Gingrich said: "No, but he will."