The Saturdays' Una Healy performs at Capital's Summertime Ball 2013. This image appears in the gallery:The Saturdays At The Summertime Ball 2013 - Pictures 7. The Saturdays' Una Healy performs at Capital's Summertime Ball 2013. Picture: PA 16 images See the full gallery: The Saturdays At The Summertime Ball 2013 - Pictures