Pope Benedict's style

Pope Benedict XVI smiles as he tries on a Spanish Civil Guard hat as he arrives in St. Peter's square at Vatican for his weekly general audience Dec. 7, 2005.

Shoe detail of Pope Benedict XVI as he arrives at Westminster Abbey on Sept. 17, 2010, in London.

Pope Benedict XVI wearing a red Saturn hat, arrives to lead his weekly general audience at St Peter's Square at the Vatican on June 22, 2011.

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Pope Benedict XVI wears a sombrero in Leon, Mexico on March 25, 2012.

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Pope Benedict XVI walks in the gardens of his summer residence on July 26, 2010, in Castel Gandolfo, near Rome, Italy.

Pope Benedict XVI waves to the faithful gathered in St. Peter's Square as he arrives for his weekly audience on Dec. 28, 2005, in Vatican City.

Pope Benedict XVI, center, waves to believers after leading an eucharist at the Freiburg airport on Sept. 25, 2011, in Freiburg im Breisgau, Germany.

Pope Benedict XVI arrives at the Cathedral of Turin on May 2, 2010 in Turin, Italy.

Pope Benedict XVI leads the First Vespers and Te Deum prayers at St. Peter's Basilica on Dec. 31, 2009, in Vatican City, Vatican.

Pope Benedict XVI puts on his white cap during the mass for the liturgy of ashes at St. Sabina basilica in Rome, March 1, 2006.

Pope Benedict XVI attends a canonisation ceremony in St. Peter's square on Oct. 12, 2008, in the Vatican City.

Pope Benedict XVI blesses the pilgrims during the first Easter of his pontificate, April 16, 2006, in Saint Peter's Square at the Vatican.

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Pope Benedict XVI visits the sanctuary of the Virgen de la Caridad del Cobre on March 28, 2012, in Havana, Cuba.

Pope Benedict XVI waves to the faithful gathered in St. Peter's square during his weekly audience on Oct. 6, 2010, in Vatican City, Vatican.

Pope Benedict XVI arrives at the Synagogue of Rome for a visit on Jan. 17, 2010, in Rome.

Pope Benedict XVI waves to the faithful gathered at the Colosseum at the end of the Way of the Cross on April 22, 2011, in Rome, Italy.

Pope Benedict XVI attends his annual meeting with Holy See Diplomats at the Hall of the Throne on Jan. 9, 2012, in Vatican City, Vatican.

Pope Benedict XVI walks as he arrives to St. Peter's square for the Holy Easter Mass on April 8, 2012, in Vatican City, Vatican.

Pope Benedict XVI travels in the Popemobile through St Peter's Square on Feb. 27, 2013, in Vatican City, Vatican.

Pope Benedict XVI celebrates Mass for more than 45,000 Catholics at the new Nationals Park April 17, 2008, in Washington.

Pope Benedict XVI waves farewell at the conclusion of the Mass held at Yankee Stadium April 20, 2008, in the Bronx borough of New York.

Pope Benedict XVI salutes as he leaves the St.Peter's Basilica after the Chrismal Mass at the Vatican, April 5, 2007.

Pope Benedict XVI waves to the faithful as he leaves St Peter's Square at the end of his final general audience on Feb. 27, 2013, in Vatican City, Vatican.

Pope Benedict XVI leads the Ash Wednesday service at the Santa Sabina Basilica on Feb. 25, 2009, in Rome.

Pope Benedict XVI blessing faithful at the end of the Epiphany mass in St. Peter's Basilica in Vatican City on Jan. 6, 2013.