The former This Morning presenter, 43, appeared on Friday's Graham Norton Show alongside fellow guest and host Alan Carr - revealing they once did shots with the legendary physicist.
The stars of new Netflix series Celebrity Bear Hunt pulled out all the stops as they attended the premiere at the Odeon West End in central London on Tuesday night.
The former This Morning presenter, 43, will host Celebrity Bear Hunt - which sees famous faces dropped into the jungle of Costa Rica to become 'prey' for the TV survival expert.
Holly, 43, looked sensational in a sparkly pink ballgown with a plunging neckline that showcased a glimpse of her cleavage and huge skirt made of layers of tulle.