Amanda Holden was in for a big shock this week! The Britain's Got Talent star took to Instagram to share a short clip showing the moment she was surprised live on air by her Heart FM co-host Jamie Theakston.MORE: Britain's Got Talent stars devastated after death of co-starWith You is from the musical Ghost listen out this Friday on @thisisheart #breakfastA post shared by Amanda Holden (@noholdenback) on Watch: Amanda Holden surprised live on Heart FMDuring the video, Jamie and Amanda celebrated