Katy Perry was born  Katheryn Elizabeth Hudson on October 25, 1984 in Santa Barbara,  California to Mary Christine Hudson (née Perry) & Maurice Keith  Hudson.

Katy Perry

Lady Gaga is an American singer-songwriter, performance artist and actress,  known for her flamboyant costumes. She was born Stefani Joanne Angelina  Germanotta on March 28, 1986, in New York City, New York, U.S. Her  adopted stage name is derived from Queen's song “Radio Ga Ga. 

2. Lady Gaga

Taylor Swift was born in West Reading, Pennsylvania.  When she was 13, her parents sold their family farm in Pennsylvania and  moved to Hendersonville, Tennessee, so she could pursue a career in  country music in nearby Nashville. Swift signed a deal with Sony/ATV as a  songwriter the next year, in 2004. 

3. Taylor Swift

Born Madonna Louise  Ciccone in August 1958 in Bay City, Michigan, she moved to New York in  1978 and studied with renowned choreographer Alvin Ailey, joined up with  the Patrick Hernandez Revue 

4. Madonna

Britney Jean Spears was born on December 2, 1981 in McComb, Mississippi & raised in Kentwood, Louisiana.  As a child, Britney attended dance classes, and she was great at  gymnastics, winning many competitions and the like. But, most of all,  Britney loved to sing. 

5. Britney Spears 

Beyoncé, in full Beyoncé Giselle Knowles, (born September 4, 1981, Houston, Texas, U.S.), American  singer-songwriter and actress who achieved fame in the late 1990s as  the lead singer of the R&B group Destiny's Child and then launched a  hugely successful solo career

6. Beyonce

Robyn Rihanna Fenty was born on February 20, 1988, in Saint Michael, Barbados. She is the daughter of accountant Monica (née Braithwaite) and warehouse supervisor Ronald Fenty. 

7. Rihanna

Justin Drew Bieber was born on March 1, 1994 at St. Joseph's Hospital in London, Ontario, Canada and was raised in Stratford, Ontario. He is the son of Pattie Mallette and Jeremy Bieber. He is of French-Canadian, Irish, German, English, and Scottish descent. 

8. Justin Bieber