Cheeky Prince Louis pulls faces, shows off his dance moves as he joins Prince George and Princess Charlotte at Trooping the Colour

Kate Middleton made her first public appearance in almost six months at Trooping the Colour on Saturday — but it was also the first time her three children had been seen since last Christmas.

Prince George, 10, Princess Charlotte, 9, and Prince Louis, 6, accompanied the Princess of Wales, 42, in a horse drawn carriage that made its way through London before a scheduled appearance on the Buckingham Palace balcony.

Louis — who is famed for his animated expressions —didn’t disappoint, poking a series of faces as he sat next to his mom in the carriage.

The little prince even appeared to make cancer-stricken Kate burst out laughing at one point, with an adorable photo showing the mother and son sharing a humorous moment.

The fourth in line to the British throne was later spotted trying to open a window inside Buckingham Palace before he began dancing on the balcony.

Viral video showed the cheeky prince showing off his moves while dressed formally in a blazer, shorts and high socks.

Meanwhile, his two older siblings appeared more serious as they attend the event full of pomp and pageantry.

Both Charlotte and George, who will turn 12 next month, have grown significantly since last Christmas.

Prince George, who is second in line to the throne, appeared to reach almost to his mom’s shoulders — no small feat given that she stands close to 6 feet tall in heels.

Kate received a boisterous ovation from thousands of royal fans who lined the route to Buckingham Palace — her first public appearance since revealed she was undergoing chemotherapy for an unspecified form of cancer in March

Meanwhile, King Charles and Queen Camilla led the procession while William rode on horseback.

On Saturday, the time-honored parade featured thousands of marching soldiers and horses along with a Royal Air Force flyover and music.

Trooping the Colour, where “regimental flags of the British Army, historically described as ‘Colours’, are consecrated,” happens each June regardless of King Charles’ birthday, which falls on November 14.