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Instant Index: Pippa Middleton's Secret Engagement to Beau

David Muir reveals the top stories that have people buzzing this week.
0:46 | 09/01/13

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Transcript for Instant Index: Pippa Middleton's Secret Engagement to Beau
Our "instant index" and the big secret buzzing in the uk is over duchess kate middleton's sister. The papers there asking, is pippa middleton secretly engaged to the man she's smiling with in this picture? "Sunday people" reporting that the announcement will be made after her 30th birthday, which comes on friday. We shall see. She is determined and braving the atlantic again, swimming toward florida. Diana nyad hoping to make history, her fifth and final try. He's pasted the 63,000 mile mark. Nyad is trying to become the first person to swim from cuba to florida without a shark cage. We're rooting for you. And it never hurts to use spell-check even if you are at one of america's most prestigious universities. The proud fighting irish of notre dame because the figthin irish. Fans tweeting about it all weekend long.

This transcript has been automatically generated and may not be 100% accurate.

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