The reality television matriarch takes a stroll down memory lane, on her blog

Mar 19, 2012 12:15 GMT  ·  By

To celebrate her son's 25th birthday, Kris Jenner came up with what can only be described as a very original idea: she posted a photo of herself pregnant with him, on her official blog, wearing next to nothing, showing off her protruding tummy.

The Jenner-Kardashian clan took Las Vegas by storm over the weekend to celebrate Rob Kardashian's birthday.

Before the all-night party, documented in full on Twitter by the family members, Kris gave Rob part of her birthday present: a photo of back in the day when he hadn't even arrived in this world, AceShowbiz informs.

You can see the photo at the link above.

It shows Jenner, back then aged 31, in nothing but a pair of white undies, with her hands covering her breasts.

She's looking into the camera, showing off her protruding tummy. She's pregnant with Rob, so it makes sense for her to show this photo to the world precisely on his birthday.

“Happy 25th birthday to my wonderful, handsome son, Rob!! Rob, you are the best son a mother could ask for and you make me proud every day. I love you so much!!” Kris writes on her blog.

The other members of the family were just as excited about Rob's birthday, making sure to keep their Twitter followers up to speed with the party in Vegas.

“Happy Birthday to the best brother in the world! I CANNOT believe you are 25!!! Truly I can't! God blessed me with an amazing brother. Our bond is unbreakable, even though I want to strangle you sometimes, I still adore you!” Khloe Kardashian also enthused.

Kourtney and Kim also sent their best wishes to their brother, on the same social networking website.

After dinner with the family, the younger Jenner sisters were sent home, while Kim, Rob and Kris danced until the early hours of morning at a club in Sin City.