Kendall Jenner reportedly ''threw money'' in a waitress' face last week.

The 18-year-old reality TV star was dining with Stephen Baldwin's daughter Hailey at Mercer Kitchen in New York and grew frustrated when she was declined alcohol as she is underage, so left without paying the full bill.

A source said: ''The staff wouldn't serve her [alcohol] because she's underage.

''Kendall got up and left and didn't pay for all the food . . . about $60 worth, and without a tip.''

Her waitress, Blaine Morris - who appeared in US TV show 'Skins' - followed the pair outside to ask Kendall to pay her bill, prompting the model to hurl money at her.

The source added to the New York Post newspaper's Page Six column: ''Kendall and Hailey started laughing.

''Kendall took a couple of $20 bills out of her wallet, threw them at the server and walked away, not even counting if it was enough or if it included a tip.''

Blaine later tweeted: ''That horrible moment you chase a Kardashian down the street because she forgot to pay her bill to be thrown money in your face.''

However, while a spokesperson for Kendall didn't comment, a representative for her pal insisted they were ''polite''.

The spokesperson said: ''They thought everything was paid for. Kendall was polite and asked 'Does this cover it?' They didn't run.''