Prince George is to begin his first day at school - but it is not clear whether his mother، the Duchess of Cambridge، will be well enough to take him، according to "BBC". Kensington Palace said a decision on whether Catherine، who is suffering from severe morning sickness، will drop him off will be made this morning. The four-year-old will attend Thomas's Battersea، a £18،000-a-year preparatory school in south-west London. His uniform includes navy shorts and jacket، long red socks and black shoes. The milestone for the prince comes after the Duke and Duchess of Cambridge this week announced they are expecting their third child. Catherine had to pull out of public engagements on Monday and Tuesday because she is suffering from hypremesis gravidarum، as with her previous two pregnancies.Prince George will follow in the footsteps of his father and uncle، Prince Harry، who both attended preparatory school at a young age. Notable alumni at Thomas's Battersea include pop singer Florence Welch - from Florence and the Machine - model and actress Cara Delevingne، and Fresh Meat star Charlotte Ritchie. His new school was described by the Good Schools Guide as: "A big، busy، slightly chaotic school for cosmopolitan parents who want their children to have the best English education money can buy." Navy Bermuda shorts Previously، Prince George attended nursery at the Westacre Montessori School، in Norfolk. However، his move to London coincides with the duke and duchess's decision to begin moving their main residence to Kensington Palace، as Prince William takes on more royal duties.Prince George، who is often pictured wearing shorts and knee-high socks، will continue this sartorial staple at Thomas's. Pupils in reception class wear red polo neck shirts، navy Bermuda shorts and knee-high red socks with navy trimming. The prince will also wear a v-neck jersey emblazoned with the Thomas's emblem، as well as a navy jacket.