President Obama is a native of Hawaii, but don't ask him to wear a grass skirt. At this year's Asia-Pacific Economic Cooperation summit, Obama broke a two-decade long tradition and wouldn't wear any of the usual weird clothes that leaders typically wear for the group photo.

From the Los Angeles Times:

As the leaders assembled for the photo, Australian Prime Minister Julia Gillard was overheard talking about grass skirts; Obama, coconut bras.

"We are ending that tradition," Obama told his foreign counterparts.

[...]

"I got rid of the Hawaiian shirts because I had looked at pictures of some of the previous APEC meetings and some of the garb that had appeared previously, and I thought this may be a tradition that we might want to break," Obama said. "I suggested to the leaders -- we gave them a shirt, and if they wanted to wear the shirt, I promise you it would have been fine.  But I didn't hear a lot of complaints about us breaking precedent on that one."

Here are former presidents Bill Clinton and George W. Bush from a couple times they took part in the tradition via the Huffington Post: