AceShowbiz -

Kim Kardashian is "jealous" of Beyonce Knowles' pregnancy spotlight. Rumor has it, the "Keeping Up with the Kardashians" star is planning to steal back the spotlight after Beyonce's pregnancy announcement beat out Selena Gomez's picture as the most-liked Instagram post.

"Kim was shocked at the Beyonce news and she was totally checking it out and seeing how many people like the post," an insider reveals, "Then when her friend Chrissy Teigen started Tweeting that she was best friends with Beyonce, she was actually hurt and worried."

According to the insider, there is a longstanding rivalry between Kim and Beyonce, and the 36-year-old reality star is not letting it go anytime soon. Kanye West's wife began teasing about her own pregnancy on Twitter on Wednesday, February 1, before she shot it down.

"That's why she started tweeting. She thinks she's a bigger star than Beyonce. She is the biggest star in the world," the insider tells Radar Online, "While everyone was tweeting and sending congratulations to Beyonce and Jay-Z, Kim and Kanye did not say one word about it on their social media. The fact that Beyonce is going to have more kids than Kim once her twins are born absolutely drives Kim nuts! Kim was totally trying to steal Beyonce's baby thunder yesterday."

Kim is now allegedly eager to get pregnant with baby no. 3. "Kim is going to try harder than ever right now to get pregnant because she is constantly searching for a way to one up Beyonce. She seems so jealous that Beyonce is more famous than she is. It doesn't seem like Kim will ever, be okay with that," adds the source.