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.

Katheryn Elizabeth Hudson (born October 25, 1984), known by her stage name Katy Perry, is an American singer, songwriter and actress. Perry grew up with gospel music, and during her first year of high school she pursued a music career as Katy Hudson, releasing her first studio album called Katy Hudson which failed to chart. She recorded a solo album later, which was never released. After signing with Capitol Music Group in 2007, her fourth record label in seven years, she adopted the stage name Katy Perry.

She first gained recognition with the release of her first mainstream album, One of the Boys in 2008, which spawned three Billboard Hot 100 top-ten songs—"I Kissed A Girl", "Hot n Cold" and "Waking Up In Vegas". Perry supported the album with her Hello Katy Tour. In 2010, her third studio album, Teenage Dream (2010), which topped the Billboard 200 chart, and spawned five number one singles—"California Gurls", "Teenage Dream", "Firework", "E.T." and "Last Friday Night (T.G.I.F.)"—Teenage Dream was the only album (after Michael Jackson's Bad)—to do so, and the first female in history to achieve this milestone. She embarked on the California Dreams Tour, which grossed nearly $60 million worldwide. Perry re-released the album under the name of Teenage Dream: The Complete Confection on March 26, 2012, and the re-release has already spawned the number-one single "Part of Me".

Dark horse is a term used to describe a little-known person or thing that emerges to prominence, especially in a competition of some sort or a contestant that seems unlikely to succeed.

The term began as horse racing parlance. A dark horse is a race horse that is not known to gamblers and thus is difficult to place betting odds on.

The earliest-known use of the phrase is in Benjamin Disraeli's novel The Young Duke (1831). Disraeli's protagonist, the Duke of St. James, attends a horse race with a surprise finish: "A dark horse which had never been thought of, and which the careless St. James had never even observed in the list, rushed past the grandstand in sweeping triumph."

The term has been used politically in such countries as Peru, Philippines and United States.

Politically, the term reached America in the nineteenth century when it was first applied to James K. Polk, a relatively unknown Tennessee Democrat who won the Democratic Party's 1844 presidential nomination over a host of better-known candidates. Polk won the nomination on the ninth ballot, and went on to win the presidential election.

Blake Christina Lively (born August 25, 1987) is an American actress and model who stars as Serena van der Woodsen in the television teen drama series Gossip Girl. She has also starred in movies, including Accepted, The Sisterhood of the Traveling Pants, The Private Lives of Pippa Lee, The Town and Green Lantern.

Lively was born in Tarzana, Los Angeles to actors Ernie and Elaine Lively. She was raised as a Southern Baptist. The youngest of five siblings, Lively has an older brother, Eric, two half-sisters, Lori and Robyn, and a half-brother, Jason. Both of her parents and all of her siblings are, or have been, in the entertainment industry. During Lively's childhood, her parents would take her with them to acting classes that they taught because they did not want to leave her with a babysitter. Lively said that watching her parents teach acting classes helped her learn the "drills" of acting and gain confidence as she got older.

Lively was initially not particularly interested in acting, however during the summer between her junior and senior years of high school, her brother, Eric, asked his agent to send her out on a few auditions over a period of a few months. From these few auditions, she got the role of Bridget for The Sisterhood of the Traveling Pants. Lively filmed her scenes in The Sisterhood of the Traveling Pants between her junior and senior years at Burbank High.

Emily Jean "Emma" Stone (born November 6, 1988) is an American actress.

Stone was a cast member of the TV series Drive, and made her feature film debut in the comedy Superbad (2007). She appeared in The House Bunny (2008) and Ghosts of Girlfriends Past (2009). She then starred in the horror-comedy Zombieland and the indie comedy Paper Man in 2009. In 2010, Stone voiced the character Mazie in Marmaduke, and starred in the high school comedy Easy A, which earned her a nomination for a Golden Globe for Best Actress in a Musical or Comedy. In 2011, she starred in the films Crazy, Stupid, Love. and The Help, both of which were well received by critics and commercial successes. Stone will play Gwen Stacy in the Amazing Spider-Man film, a reboot of the Spider-Man film franchise.

Stone was born in Scottsdale, Arizona, the daughter of Krista (née Yeager), a homemaker, and Jeff Stone, a contractor. She has a brother, who is two years her junior. Stone's paternal grandfather was of Swedish descent, and his family's surname was anglicized to "Stone" when immigrating to the U.S. through Ellis Island; some of her ancestors also lived in Pennsylvania Dutch Country.