Japan's Crown Princess Masako goes to Netherlands on 1st official trip abroad in 11 years

Japan's Crown Prince Naruhito and Crown Princess Masako, who has been under treatment for a stress-induced illness, prepare to leave for Netherlands, at Haneda Airport in Tokyo Sunday, April 28, 2013. It is Masako's first official visit abroad in 11 years. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT, NO SALES IN CHINA, HONG KONG, JAPAN, SOUTH KOREA AND FRANCE (The Associated Press)

Japan's Crown Prince Naruhito and Crown Princess Masako, who has been under treatment for a stress-induced illness, prepare to leave for Netherlands, at Haneda Airport in Tokyo Sunday, April 28, 2013. It is Masako's first official visit abroad in 11 years. (AP Photo/Kyodo News) JAPAN OUT, MANDATORY CREDIT, NO SALES IN CHINA, HONG KONG, JAPAN, SOUTH KOREA AND FRANCE (The Associated Press)

Japan's Crown Princess Masako has left for her first official overseas trip since she became ill a decade ago.

Masako left Sunday to accompany her husband, Crown Prince Naruhito, on a six-day trip to the Netherlands, where they will attend Tuesday's coronation of Crown Prince Willem-Alexander as the new Dutch king. Officials say Masako may skip other events depending on her condition.

It is Masako's first official overseas trip since the couple's 2002 visit to New Zealand and Australia.

Masako developed a stress-induced illness soon after giving birth to the couple's only daughter, Aiko, who is now 11.

Palace doctors say the U.S.-educated Masako is getting better, but she hardly appears in public.