Mila Kunis gets an assist from NY firemen.

Ashton Kutcher's new girlfriend Mila Kunis was recently in New York City and ran into a spot of trouble when an elevator she was riding in came to a halt and became stuck in-between floors in a local high-rise.

The US actress and her fellow passengers were trapped for 45 minutes and the New York Fire Department had to provide an assist to free the stuck passengers.

The 'Black Swan' actress was in the city and in a building on Sunday (09.09.12) when she and 10 other people were trapped, but those present said Mila and her friend remained calm throughout the ordeal.

A source told the New York Post's Page Six: ''They were stuck in the elevator for 45 minutes, and it became very hot in there, but Mila and everyone else remained calm. There were fire trucks outside, and firefighters helped them get out.''

More on Mila and boyfriend Ashton - it was recently revealed the pair are planning to adopt a dog together.

A friend of the pair said: ''Mila and Ashton have been touring shelters looking for an abandoned dog that needs a loving home.

''They have their hearts set on a big dog - either a golden retriever or a Labrador.''

Mila and Ashton first met 14 years ago when they co-starred in hit sitcom 'That 70s Show', and the pair rekindled their spark after he split from wife Demi Moore.

© Bang Showbiz