Spandex, knee high boots, nineties fashion, fourth wall breaks, chorus members appearing from nowhere, and oodles upon oodles of ABBA. I could only be talking about one thing and that, of course, is Mamma Mia, the all singing all dancing spectacular that has been delighting audiences with its bouncy carefree lightheartedness for nearly 27 years. Sophie (Ellie kingdon) is getting married and upon finding her mother Donna's (played at this performance by Emma Odell) diary, she