03/18/2010 05:12 am ET | Updated May 25, 2011

Susan Boyle Sucks Thumb, Cries After NY Performance

ust moments after finishing a note-perfect performance on live American television, Susan Boyle was seen on television breaking down in tears.

The 48-year-old had been enjoying lunch with fans at the Rock Centre cafe in New York's Rockefeller Centre.

But she appeared increasingly withdrawn and started to tremble and suck her thumb. Then, visibly overcome with emotion, she bowed her head and began to sob.

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