Pregnant Kim Kardashian West was made to feel ''so very comfortable'' when her guests showed up to her surprise birthday party with fake baby bumps.

The 'Keeping Up With The Kardashians' star - who is expecting her second child, a son, with husband Kanye West - was thrown a surprise party yesterday (21.10.15) to mark her 35th birthday and has revealed she was made to feel right at home when everyone showed up with a bump.

Sharing details on Twitter, she wrote: ''He [Kanye] rented out the entire movie theater to screen the new Steve Jobs movie (it's soooooooo good btw) ''He had all of my family & close friends come dressed up as their best pregnant Kim look (fake baby bumps provided on arrival!) (sic)'' And the 35-year-old star - who also has two-year-old daughter North with the 'Bound 2' rapper - admitted the ''fun cool theme'' made her feel ''so very comfortable''.

She added: ''Not sure if that was to make me feel less huge or just a fun cool theme but I loved it & had the best time ever! ''Feeling so very comfortable eating churros with a bunch of pregnant women! Just what I needed, the perfect chill yummy food birthday!!!! (sic)'' Kim took to Twitter to show off her stunning three-tiered cake, which was decorated with white flowers and had a sign reading, 'Happy Pregnant Birthday Kim,' placed on it.