It has to be a joke. That was a common reaction to the news Thursday that Kim Kardashian and boyfriend Kanye West have named their child North West. There had been some specualtion months ago that North would be the baby's name, but most didn't take it seriously.

Earlier this week, it was reported that the baby would be named Kaidence Donda West. However, the couple settled on North, TMZ confirmed based on the child’s birth certificate at Cedar-Sinai Hospital. People reacted on Twitter immediately, many claiming the name is “stupid.” One person wrote, “Did Kim Kardashian & Kanye West seriously name their child North West? What’s up with celebrities & these stupid names? #letshopethisisajoke [sic].”

With this decision, Kardashian and West join a host of famous pairs who've given their children uncommon names.

Actor Nicolas Cage named his son Kal-El after Superman because he is a comics fan. Beyonce named her daughter Blue Ivy, in part because four is Beyonce’s favorite number (IV is the Roman numeral for 4) and also because during her pregnancy Beyonce found blue ivy on a tree in Croatia, which was apparently significant to her and husband Jay-Z.

Beyonce’s best friend Gwyneth Paltrow and husband Chris Martin named their daughter Apple. Paltrow explained the name to Oprah Winfrey in 2004, saying, “Basically, it was because when we were first pregnant, her daddy said, if it's... a girl, I think her name should be Apple. And I just, it sounded so sweet, and it conjures such a lovely picture for me, you know apples are so sweet and they're wholesome, and it's biblical…”

Actor Forest Whitaker named his son Ocean, stating, "I want those names to be their destiny, for my daughter to be honest and my son to be expansive. I try to be like a forest, revitalizing and constantly growing."

Former Playboy playmate Holly Madison named her little girl Rainbow, and even admitted she knew the name might not be the easiest to deal with as the girl grows up. “I know she's gonna go through the phase when she’s younger where she hates her name," Madison told OMG Insider correspondent Keltie Colleen earlier this year. “So she’ll probably go by ‘Rain’ or ‘Bow,’ but I’ll always call her Rainbow.”

And of course there's Blanket, the youngest son of the late pop icon Michael Jackson. Though his real name is Prince Michael Jackson II, the world knows him as Blanket. He's now 11.

Would you give your child a unique name?