The Keeping Up With the Kardashians beauty was fast asleep when the stranger began pounding on the door, thinking she had been locked out of her own room, oblivious to the fact the suite actually belonged to the expectant TV star.

Kardashian was in the south of France to discuss her popular mobile gaming app at the Cannes Lions event on Wednesday and admitted she was sleep-deprived as she recounted the story to attendees at the conference.

She said, "There was a woman knocking on a hormonal, pregnant woman's door, namely me, at four in the morning - not knocking but banging and kicking, and I couldn't go back to sleep afterwards, and she was naked.

"So I screamed profanities at her and told her to put some clothes on and get off my door, but she kept using her AmEx (American Express credit card) as the (room) key. She had no idea it was my room."

The mum-to-be added, "I hope she's not here in this room."

Kardashian's speech at the advertising and creative conference took place hours after she had taken to Twitter to vent about the incident, revealing, "I took a fun video of her as a reminder of why I never tolerated drinking 2 (too) much! Slob kabob! I won't post it but it's funny!"