Alyson stars in When Harry Met Sally.

Buffy star Alyson Hannigan has been practising making rude noises in preparation for her West End debut, in the new stage version of the film When Harry Met Sally.

Alyson, who will be starring opposite Luke Perry, has told ananova.com that the production will retains the infamous restaurant scene where Sally (Meg Ryan in the film) gets all hot and bothered, prompting a fellow diner to say: "I'll have what she's having."

Alyson says of the scene, "I've been practising all the time. She's a different person... but I hope it will still be funny."

She added that she cannot wait appear in the West End.

"The movie is one of my favourites, and this was such an amazing opportunity to get to come to London," she said. I'm nervous, but in a good way. Overcoming the nerves is another reason for me wanting to do this."

Alyson reveals that it will be tough being away from her husband, Angel actor Alexis Denisof.

"Being away from him was the biggest drawback to the job. I've been offered a few things that would have taken me away from home since we got married and they were easy to turn down. But this was too good to say no to," she said.

No expense seems to have been spared for the production; it even features music from current jazz star and heartthrob Jamie Cullum.

When Harry Met Sally will be previewed from 10th February and will open on 20th for a run of sixteen weeks.