Kim Kardashian is now said to be worried her fans are losing interest in their former idol after she deliberately remained in hiding for two months following the birth of her daughter North West.

Her sister Kourtney Kardashian was on hand to remind followers of Kim’s existence on Wednesday, by tweeting a bikini snap of the two taken on holiday in Mexico in 2011.

With the strange caption: “Squallay.  kimkardashian,” the shot shows the siblings walking on the beach with Kim Kardashian showing off her killer curves in a green bikini.

Kourtney Kardashian wanted to remind followers of Kim’s existence by tweeting a bikini snap of the two taken on holiday in Mexico in 2011

The vintage picture comes as the new mother is battling to lose the baby weight, ahead of her “big debut”.

After welcoming her daughter with Kanye West on June 15, Kim Kardashian decided to hide out at her mother’s house until she had shed the excess pounds.

But two months on Kim Kardashian is now afraid that she has waited too long to showcase her slimdown and that her star power is slipping.

“Kim has had this plan to show off how great she looks after giving birth and selling the pictures or videos for a lot of money, but she’s getting worried that it’s been too long and people aren’t as excited about seeing her anymore,” a source told RadarOnline.com.

“Kim is used to having millions of adoring fans begging to see her all the time, but there has been a shift in her fan base and she’s getting nervous that people don’t care as much about her,” the insider revealed.

Kim Kardashian is even worried that she can’t compete with the world’s most famous birth, that of Prince George.

“After all the excitement the whole world had for Kate Middleton’s royal baby, Kim had hoped that people would care about her that much, but now she’s freaking out that they’re not.”

Desperate to keep tongues wagging about her, Kim Kardashian stuck out her own tongue in a silly Keek video that she posted to social media on Tuesday.

This followed Kim Kardashian’s first post-pregnancy appearance in a brief video for Kris Jenner’s daytime chat show earlier this month.