All eyes were on the Duchess of Cambridge when she breezed effortlessly through her first solo engagement.
The images of the royal rookie looking elegant and poised at the Clarence House reception did her new in-laws proud.
However, the flowing half-up-half-down do that Kate chose revealed a peek of a scar underneath her hairline.
St James's Palace confirmed that the 3in-long mark is from a childhood operation, but her spokesman would not elaborate further.
John Scurr, a consultant surgeon, said it could have been caused by the removal of a birthmark.
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