Human physical appearance refers to the outward phenotype or look of human beings. There are infinite variations in human phenotypes, though society reduces the variability to distinct categories. Physical appearance of humans, in particular those attributed which are regarded as important for physical attractiveness, are believed by anthropologists to significantly affect the development of personality and social relations. Humans are acutely sensitive to their physical appearance, some theorize for reasons of evolution. Some differences in human appearance are genetic, others are the result of age, lifestyle or disease, and many are the result of personal adornment.

Some people have traditionally linked some differences in personal appearance such as skeletal shape with ethnicity, such as prognathism or elongated stride. Different cultures place different degrees of emphasis on physical appearance and its importance to social status and other phenomena.

Various factors are considered relevant in relation to the physical appearance of humans.

Justin Randall Timberlake (born January 31, 1981) is an American singer, actor, and businessman. He achieved early fame when he appeared as a contestant on Star Search, and went on to star in the Disney Channel television series The New Mickey Mouse Club, where he met future bandmate JC Chasez. Timberlake became famous in the late 1990s as the lead singer and youngest member of the boy band 'N Sync, whose launch was financed by Lou Pearlman.

In 2002, he released his debut solo album, Justified, which sold more than seven million copies worldwide. The album was a commercial success, spawning the hits "Cry Me a River" and "Rock Your Body". Timberlake continued his success with his second solo album, FutureSex/LoveSounds (2006), debuting at number one on the Billboard 200 chart, and produced the US number-one hit singles "SexyBack", "My Love", and "What Goes Around... Comes Around".

Timberlake has won six Grammy Awards and four Emmy Awards. His first two albums made him one of the most commercially successful singers in the world, each selling in excess of 7 million copies. He also has an acting career, having starred in films such as The Social Network, Bad Teacher and Friends with Benefits. His other ventures include record label Tennman Records, fashion label William Rast, and the restaurants Destino and Southern Hospitality.

John William "Will" Ferrell (/ˈfɛrəl/; born July 16, 1967) is an American comedian, impressionist, actor, and writer. Ferrell first established himself in the mid 1990s as a cast member on the NBC sketch comedy show Saturday Night Live, and has subsequently starred in the comedy films Old School, Elf, Anchorman, Talladega Nights, Stranger than Fiction, Blades of Glory, Semi-Pro, and The Other Guys. He is considered a member of the "Frat Pack", a generation of leading Hollywood comic actors who emerged in the late 1990s and the 2000s, including Jack Black, Ben Stiller, Steve Carell, Vince Vaughn, and brothers Owen and Luke Wilson.

Ferrell was born in Irvine, California, the son of Betty Kay (née Overman), a teacher who taught at Old Mill School elementary school and Santa Ana College, and Roy Lee Ferrell, Jr., a musician with The Righteous Brothers. His parents were both natives of Roanoke Rapids, North Carolina, and moved to California in 1964; Ferrell has Irish ancestry. Ferrell has a younger brother, Patrick. When he was 8, his parents divorced. Ferrell said of the divorce, "I was the type of kid who would say, 'Hey Look at the bright side! We'll have two Christmases.'" The divorce was amicable and both parents were committed to their children. The biggest problem was Lee's line of work. As a person in show business, his paychecks were never steady and he was gone from home months at a time. Growing up in the environment made Ferrell not want to go into show business, but get a steady job.