Even if you call yourself a "little monster," you probably don't know everything about Lady Gaga.

Lady Gaga attending the Academy Awards in late February.

Long before "A Star is Born," the singer/actress/fashion provocateur had already led a rich and colorful life.

In honor of her 33rd birthday today, here are 33 fascinating facts about the singer.

1. Her real name is Stefani Joanne Angelina Germanotta.

2. Queen's 1984 hit "Radio Ga Ga" was the inspiration behind her professional name.

3. Beginning when she was four, her mother made her sit at the piano for an hour a day, whether she played or not.

4. Her first performance was in her 1st-grade play. She made her own costume out of tinfoil and hangers.

5. She has had the same vocal coach, Don Lawrence, since she was 11 years old.

Lady Gaga poses for photographers in New Delhi, India, on October 28, 2011.

6. Lawrence's nephew overheard her singing to herself in a New York boutique and connected her with his uncle.

7. She attended the oldest independent girls' school in Manhattan.

8. Her fellow alumnae there include Caroline Kennedy as well as Paris and Nicky Hilton.

9. Gaga was one of the only students with an after-school job, as a waitress at an Upper West Side diner.

10. Her freshman year of high school she joined a cover band that played classic rock like Led Zeppelin and U2.

Lady Gaga performs as part of Lollapalooza 2010 at Grant Park in Chicago.

11. She has many tattoos, but her first was a G clef on her lower back.

12. Her first celebrity crush was actor Adrien Brody.

13. When she was 15, she had a minor role in an episode of "The Sopranos."

14. She was one of 20 students accepted early into NYU's Tisch School of the Arts, but she withdrew after her second semester.

15. When she was in college, someone created a Facebook group called "Stefani Germanotta, you will never be famous."

Lady Gaga at the 2009 Grammys in Los Angeles.

16. She met Lady Starlight, a performance artist and Gaga collaborator, at a bar where Lady Starlight used to go-go dance. Gaga was dating the bar's manager.

17. Lady Gaga once was a go-go dancer herself, on New York's Lower East Side.

18. Akon pushed Lady Gaga's solo career when he signed her to his label.

19. She dyed her hair blonde after a British reporter mistook her for Amy Winehouse.

20. She opened for New Kids on the Block when they toured in 2008.

Lady Gaga performs during the Super Bowl 51 halftime show at Houston's NRG Stadium in 2017.

21. Her song "Telephone" was originally written for Britney Spears' "Circus" album.

22. Her younger sister Natali was in the music video for "Telephone."

23. Her father, president of GuestWifi, helped establish the spread of wireless internet access in hotels.

24. She performs without pants because her grandmother, who has poor vision, can "make out the lighter parts like her skin and hair."

25. One of her middle names, Joanne, was given in memory of her aunt who died of Lupus.

Lady Gaga speaks at a NYC Pride event in June 2013 in New York City.

26. Joanne died at 19, 12 years before Gaga was born. The singer named her fifth album in her honor.

27. Gaga is godmother to Elton John's two sons.

28. She prefers New York to Los Angeles.

29. She has a framed letter from David Bowie on her mantel.

30. Her song "Boys, boys, boys" was inspired by Mötley Crüe's hit "Girls, girls, girls."

Lady Gaga performing on her Fame Ball Tour in 2009 in Los Angeles.

31. She suffers from fibromyalgia.

32. Her fragrance "Fame" was the first in the world to change color from bottle to mist. It was described as "the most important innovation in the fragrance industry in the last 20 years."

33. Lady Gaga is the first woman to ever win an Oscar, Grammy, BAFTA and Golden Globe in the same year -- all for "A Star is Born."

Source: CNN