Complex sentence: Imrie continued to pose for glamour photographs until her late thirties; her last recorded appearance is in the April 2007 edition of "Mayfair" magazine, at which time she was aged 39.
Split into simpler sentences: Imrie continued to pose for glamour photographs until her late thirties. Her last recorded appearance is in the April 2007 edition of "Mayfair" magazine, at which time she was aged 39.