Canadian singer Justin Bieber, who was arrested in Miami for driving under the influence (DUI) and drag racing, was seen smiling in his mug shot. However, body language expert Lillian Glass told Hollywood Life, "This is not a genuine smile. He is scared to death. If you put [your] hands over his mouth, his eyes are not smiling — it's a nervous, tense type of smile. He is frightened. When you see the side shot, his head is cocked — he is trying to put on a good show. [But] inside, he is scared to death."

Perhaps Bieber needs to take lessons from old hands at the celebrity mug shot game, like Lindsay Lohan and Paris Hilton. LiLo has had many, many opportunities to perfect her booking photo pose, while Hilton always makes sure she's perfectly coiffed and made-up. Unlike Nick Nolte and James Brown...

Justin Bieber mugshot
Canadian teen pop singer Justin Bieber poses for his booking photo in Miami, Florida. Bieber was arrested on a drunk driving charge after he was caught drag racing on a main thoroughfare in a rented yellow Lamborghini sports carREUTERS/Miami-Dade Corrections and Rehabilitation Department
Lindsay Lohan mugshots
Lindsay Lohan is shown in various booking photos provided by law enforcement agencies from her brushes with the law. Top left to right: July 24, 2007 (suspicion of drunken driving and cocaine possession), November 15, 2007 (when she served just 84 minutes in a Los Angeles County jail before being released due to overcrowding), July 20, 2010 (after she failed a mandatory drug test). Bottom left to right: September 24, 2010 (for violating the terms of her probation on drunk driving charges), October 19, 2011 (for failing to perform community service) and March 19, 2013 (on charges of reckless driving, lying to police and obstructing police in connection with a June 2012 car crash)Reuters
nick nolte mugshot
Nick Nolte is seen in two police booking photographs taken just over 40 years apart. In February 1961 the 20-year-old was arrested for selling fake draft cards. On September 11, 2002 the dishevelled actor was arrested on suspicion of driving under the influence of alcohol or drugs after an officer observed Nolte swerving his 1992 Mercedes-Benz into opposing traffic near his Malibu homeREUTERS/California Highway Patrol
robert downey jr mugshots
Three mugshots dating from Robert Downey Jr's 'troubled' period: August 1999 (after missing a drug test under the terms of his probation from an arrest for possession of heroin, cocaine and a handgun in 1996); November 2000 (arrested for being under the influence of a controlled substance and possession of cocaine and Valium); and April 2001 (arrested for suspicion of being under the influence of drugs when an LA police officer found him wandering barefoot)The Smoking Gun
paris hilton mugshot
June 4, 2007: Paris Hilton is photographed after checking herself into a women-only prison to start a 23-day sentence for violating probation on a drunk driving charge. August 28, 2010: This Paris Hilton mugshot was released by Las Vegas police after she was arrested for cocaine possessionREUTERS/Las Vegas Metropolitian Police
OJ Simpson mugshot
OJ Simpson is seen in two mugshots: On June 17, 1994 he was arrested (after a low-speed car chase) on suspicion of the murder of his wife Nicole Brown and her friend Ronald Goldman. The booking photo on the right dates from 2008, when he was sentenced to a total of 33 years in prison on charges including felony kidnapping, armed robbery and conspiracyREUTERS/Las Vegas Metropolitan Police Department
phil spector mugshot
June 5, 2009: These photos of Phil Spector without the wigs he wore during his trial were issued by the California Department of Corrections. Spector received a 19-year sentence for second-degree murder, in the death of actress Lana ClarksonREUTERS/California Department of Corrections
mel gibson mugshot
Mel Gibson is pictured on July 28, 2006 (left) after he was arrested on suspicion of Driving Under the Infuence (DUI) in Malibu, California; and on March 17, 2011 on charges of battery (he pled no contest and was sentenced to 16 hours of community service and 52 weeks of counselling)REUTERS/Los Angeles County Sheriff Department/El Segundo Police Department
nicolas cage
April 16, 2011: Nicolas Cage was arrested in New Orleans after a drunken argument with his wifeREUTERS/Orleans Parish County Sheriff's Office
mugshot hugh grant
June 27, 1995: Hugh Grant was arrested near Sunset Boulevard in Hollywood on charges of misdemeanour lewd conduct in a public place, with prostitute Divine BrownReuters
mugshot james brown
January 28, 2004: The Godfather of Soul, James Brown, was arrested on suspicion of committing domestic violenceREUTERS/Aiken County Sheriff's Office
mugshot charlie sheen
December 25, 2009: Charlie Sheen's booking photo was released by the Aspen Police Department after the actor was arrested for second degree assault, menacing and criminal mischief with a domestic violence componentREUTERS/Aspen Police Department
michael jackson mugshot
November 20, 2003: Michael Jackson is pictured in this Santa Barbara County Sheriff's Department booking mug after he was booked on suspicion of child molestation SV - RTR7EI2REUTERS/Santa Barbara County Sheriff's Department