Most people who are all about fashion made sure to tune into President Barack Obama’s second inauguration to see what kind of attire the first lady would model for the event, but mid-inauguration all anyone on Twitter could talk about was Supreme Court Justice Antonin Scalia’s hat.

Though there seems to be one plausible answer for what type of hat the 76-year-old Supreme Court justice was wearing, there was plenty of speculation as the Twitterverse tried to figure it out.

Among the suggestions:

An Olympic beret:

@benzumsteg asked, “Is Scalia wearing one of those ROOTS berets from the 2002 Winter Olympics?”

A painter’s hat:

@RyanHaaker questioned, “Why is Antonin Scalia wearing a renaissance era painter's hat? #StealingArethasThunder”

A medieval monk costume:

@TomJunod mocked the Justice’s head attire, “Scalia in that hat: the mad medieval monk, fresh from illuminating a biblical manuscript and torturing heretics.”

The hat of a Vatican palace guard:

@teenagesleuth commented, “Antonin Scalia looks so cute in that Vatican Palace Guard's hat.”

It’s not the first time Scalia has worn something funky to keep his head warm. Four years ago, at Obama’s first inauguration, he wore another odd hat that had peaked corners, while most others in attendance dressed conventionally. 

According to Walshslaw, Scalia’s headgear is actually a custom-made replica of the hat in Hans Holbein’s famous 1527 portrait of St. Thomas More, the Catholic martyr and patron saint of lawyers. The website said the hat was a gift from St. Thomas More Society of Richmond, Va.

Michelle Obama has already been praised for her 2013 inauguration attire, an ensemble of a navy-silk, checkered-patterned overcoat and a dress designed by Thom Browne, according to CBS News. The first daughters looked pretty in purple, with older daughter Malia wearing a plum-colored J. Crew coat and sister Sasha donning a Kate Spade coat and dress in a different shade of purple.

But where the first lady will truly shine will be at the inaugural balls Monday night. In 2009 she wore one of the most magnificent gowns, a beautifully embellished one-shoulder Jason Wu dress, which helped make the designer a household name.

This year the Obamas will be attending fewer than five inaugural balls, as opposed to 2009, when they went to 10 official balls to dance the night away.