The digits briefly appeared on her Twitter feed before being deleted.
But some of the more eagle-eyed among her eight million followers caught the inadvertent post and called the number up.
They found it belonged to Duncan Wolfe, who worked at the White House as videographer and "creative digital strategist" under the Obamas and who is now a Chicago filmmaker and director.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
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