From Komchadluek, July 17, 2011
The caption reads: On July 16, 2011, His Royal Highness Crown Prince Maha Vajiralongkorn, on behalf of His Majesty the King, arrived at the main boht [chapel] of the Temple of the Emerald Buddha at the Grand Palace to change the Emerald Buddha’s robe from the hot season garment to that for the rainy season.