Blake Lively has been compared to a llama.

The "Gossip Girl" star was horrified when a photographer told her she resembled the hairy, humped animal at the launch of luxury hotel W Fort Lauderdale in Florida on Friday.

The 21-year-old beauty was strutting down the red carpet in a slinky white gown and towering black heels when a paparazzo screamed at her to attract her attention.

A source said: "He was shouting, 'You look beautiful, like a llama!' He meant to say gazelle, because she looked so leggy slim. Blake looked so confused!"

The star was later overheard asking her co-star and boyfriend Penn Badgley what the photographer was trying to say.

The source added: "She was saying, 'A llama? What does that even mean?' Then she started doing an impression of one, hunching over and making funny noises while Penn laughed."

Blake recently revealed the extensive planning and effort that goes into each of her red carpet outfits to ensure she doesn't look "frumpy".

She said: "My style is always changing, but I always tend to look for something more ethereal and not as straight. I don't like anything too frumpy."

(China Daily/Agencies June 9, 2009)