Actress Katherine Heigl was left upset after she missed an opportunity to meet Jennifer Lawrence when The Hunger Games star found her dog in the hallway of their hotel.

The Knocked Up star was using the bathroom in her mum's New York hotel room on Thursday (13Nov14), when the pooch escaped.

She tells U.S. breakfast show Today, "I had to use the facilities, so I went to my mum's room because a lot of people were in my room and (my dog) gets really nervous when she can't see me or hear me, so she must have snuck out of my room.

"Suddenly I just hear this voice like, 'Who's dog is this? Somebody lost their dog!' I'm like, 'Mum, it's probably Gertrude,' and my mum goes out and Jennifer Lawrence has my dog and I was so mad because I was like, 'Wait, I love her and I didn't get to meet her!'"