Olga is a very sweet and tender-hearted six-year-old girl who has blonde hair reaching down to her shoulders. She has an undying love of pyjamas and she always wears a bright pink long-sleeved pyjama top with a fairy waving a wand on it, a pair of pink long-sleeved pyjama bottoms with cute little red hearts on it, a pair of cuddly pink mittens, a pair of pink slippers with purple hearts on them and a pink frilly sleeping mask with closed eyes on it. She is part of a club called the 'Pyjama Lovers Club' and she lives in a clubhouse with her two-year-old little sister Otta and her five friends Millie (one year old), Irina (five years old), Millie (seven years old) and the twins Emma and Ella (both three years old).