When it comes to baby names, you have no idea what to expect from celebs.
In the past two decades, we've seen a major shift from common names to really unique monikers, and celebs have led the charge.
Zany names are the new Hollywood norm, but even ones that sound fabricated can have roots in reality.
Here are the stories behind the famous figures who inspired some celebrity children's names.
1. David Beckham says his daughter Harper's name was inspired by author Harper Lee.
2. Norman Reedus and Helena Christensen named their son Mingus after jazz bassist Charles Mingus.
3. Monroe Cannon was named after mom Mariah Carey's idol, Marilyn Monroe.
4. Joel Madden and Nicole Richie had interesting inspiration for both their kids' names.
Sparrow's name was inspired by Captain Jack Sparrow from Pirates of the Caribbean.
5. Fergie and Josh Duhamel named their son Axl after Guns N' Roses frontman Axl Rose.
6. Zoe Saldana and Marco Perego named their child Bowie after David Bowie.
7. Jessa Duggar and husband Ben Seewald named their firstborn son Henry Wilberforce. His middle name honors William Wilberforce, a politician and philanthropist.
They named another one of their sons Spurgeon after Charles Spurgeon, a British preacher from the mid to late 1800s.
8. Dax Shepard and Kristen Bell's daughter, Lincoln, is named after President Abraham Lincoln, indirectly.
9. Lilibet Diana was named after members of her famous family.
10. Rumi Carter is named after Jay Z and Beyonce's favorite poet, 13th-century Persian poet Rumi.
11. John Legend and Chrissy Teigen chose the middle name Simone for his daughter, Luna, after singer/activist Nina Simone.
12. Amy Schumer originally named her son Gene Attell, with his middle name as a nod to fellow comedian and friend Dave Attell.
13. Ashlee Simpson and Pete Wentz named their son Bronx Mowgli, with his middle name as a nod to the Jungle Book character.
14. Anderson Cooper named his older son, Wyatt Morgan, after his late father, author Wyatt Emory Cooper.
