The awards were held on Wednesday 25 January and shown live on ITV1, direct from the 02 arena in London. Katherine's award was in recognition for her role as Becky McDonald in Corrie, a role she's had for six years.
Katherine has now left Coronation Street and will be starring on stage in She Stoops to Conquer at the National Theatre in London.
Katherine wasn't able to collect the award in person and so it was left to Ryan Thomas (Jason Grimshaw) and Paula Lane (Kylie Platt) to collect the award for her. Paula read out a few words from Katherine. "Becky gets Barbados and I get an NTA, woohoo!"
Coronation Street also won the award for Best Serial Drama. Read more on that here and see pics from the red carpet arrivals here.
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