Dressed casually in stylish skinny jeans, a black jacket and matching trainers, Cressida joined her half-sister Isabella Branson in supporting their brother Jacobi Anstruther-Gough-Calthorpe whose DJ group Housekeeping hosted an ‘envy’ themed party.
Camden bar Koko, one of Harry’s favourite night spots, was transformed to represent Ibiza for the night, but the Prince missed out on the tropical festivities, spending his weekend acclimatising to Antarctica’s icy temperatures ahead of his charity trek with wounded servicemen and women.
Current reports suggest the 29-year-old Prince, whose gruelling trek is already two days behind schedule thanks to weather condition, is snowed in at his base camp in Antarctica after a snow storm and high winds.
Harry and his fellow Walking With The Wounded expedition members are now expected to depart on the 16-day trek on Tuesday at the earlier, according to The Mirror.
Once the race does kick off, Harry and his team will endure temperatures as low as minus 45C as they trek up to 20km each day towards the South Pole.
Harry is patron of the Walking With The Wounded South Pole Allied Challenge, and will race more than 330km to the finish line to raise funds for military charities.
The Prince is well-prepared for the 16-day trek, having undergone special training with his team to equip himself for the gruelling conditions, including spending 24 hours in an icy chamber.