He's without doubt the most famous boxer that ever lived, so Muhammad Ali is to blame for this trend as celebrities are lining up to 'punch' the boxing legend.
From Ronald Reagan to David Beckham, presidents, pop stars and footballers have been photographed with Ali in this famous pose.
See below for a selection of the best
David Beckham Sports Personality of the Year
Manchester United player David Beckham (L), who received second place for Sports Personality of the Year, play fights with Sports Personality of the Century, Muhammad Ali, at the BBC Sports Personality of the Year Awards, held at BBC Television studios in London.
Boxing legend Muhammad Ali (L) and US actor Michae
WASHINGTON, : Boxing legend Muhammad Ali (L) and US actor Michael J. Fox (R) gesture before the start of a Senate subcommittee on Labor, Health, Human Services and Education hearing on Parkinson's Disease 22 May 2002 on Capitol Hill in Washington, DC. The celebrities who have Parkinson's asked the panel for more funds for Parkinson's research. AFP PHOTO/Stephen JAFFE (Photo credit should read STEPHEN JAFFE/AFP/Getty Images)
MTV Networks UpFront At The Paramount MSG
NEW YORK - MAY 5: Former New York City Mayor Rudolph Giuliani and Boxer Muhammad Ali trade some punches backstage during the MTV Networks UpFront at The Theater at Madison Square Garden May 5, 2004 in New York City. (Photo by Matthew Peyton/Getty Images)
Patrick Swayze and Muhammad Ali during Muhammad Ali's Celebrity Fight Night XII - Inside at JW Marriott Ridge Desert Resort in Phoenix, Arizona, United States.
Earvin 'Magic' Johnson and Muhammad Ali during Muhammad Ali's Celebrity Fight Night XII - Inside at JW Marriott Ridge Desert Resort in Phoenix, Arizona, United States.
Muhammad Ali Book Launch Party In Miami
MIAMI - DECEMBER 6: Boxing legend Muhammad Ali (L) gestures behind the head of actor Will Smith at the Miami Art Basel Taschen book premiere of Ali's new book, 'GOAT - Greatest Of All Time' at the Miami Convention Center December 6, 2003 in Miami, Florida. (Photo by Gregorio Binuya/Getty Images)
Then US President Bill Clinton (R) takes the arm of boxing legend, Muhammad Ali at the opening ceremony of the centennial Olympic Games 19 July. Ali, chronically ill with Parkinson's disease, accepted the Olympic torch on its final relay leg from Janet Evans, the United States swimmer who has won four Olympic gold medals. (Photo credit should read LUKE FRAZZA/AFP/Getty Images)
Robin Williams and Muhammad Ali during Muhammad Ali's Celebrity Fight Night XII - Inside at JW Marriott Ridge Desert Resort in Phoenix, Arizona, United States.
Muhammad Ali Receives Freedom Award
LOS ANGELES - DECEMBER 2: Former heavyweight boxing champion Muhammad Ali gets a 'punch' on the nose by actress Garcelle Beauvais Nilon at the Time To Give Gala benefiting the Afghanistan World Foundation and honoring Muhammad Ali with the Freedom Award on December 2, 2003 in Los Angeles, California. (Photo by Vince Bucci/Getty Images)
Muhammad Ali and David Hasselhoff during Time To Give Gala Benefiting The Afghanistan World Foundation - Inside and Show at St. Regis Hotel in Los Angeles, California, United States. (Photo by Lee Celano/WireImage for Afghanistan World Foundation)
Jenny McCarthy exchanges jabs with Muhammad Ali backstage during Xbox's E3 press briefing at the Shrine Auditorium, Monday May 10, 2004. (Photo by M. Caulfield/WireImage for PMK/HBH)
Heavyweight boxing legend Muhammad Ali (
Heavyweight boxing legend Muhammad Ali (L) kisses the fist of Mexican-American lightweight champion Fernando Vargas (R) during the Mike Tyson-Francois Botha weigh-in at the MGM Grand Casino 14 January. Tyson will be paid 30 million USD and Botha will receive 1.8 million USD for the Saturday night fight 16 January. (ELECTRONIC IMAGE) AFP PHOTO/Mike NELSON (Photo credit should read MIKE NELSON/AFP/Getty Images)
Muhammad Ali At Barnes And Noble
NEW YORK - DECEMBER 2: Former heavyweight champ Muhammad Ali (L) and actor Tony Danza make an appearance at Barnes and Noble to meet fans and to promote Muhammad's new book, 'The Soul of a Butterfly' on December 2, 2004 in New York City. (Photo by Peter Kramer/Getty Images)
Jim Carrey and Muhammad Ali during Muhammad Ali's Celebrity Fight Night XII - Inside at JW Marriott Ridge Desert Resort in Phoenix, Arizona, United States.
Charity watch auction at Christie's In New York city, United States On October 23, 2000-Boxing Match in Christie's between Muhammad Ali and Schwarzenegger.