Couples kissed for 90 seconds while a paste set inside their mouths
One hundred couples have had their kisses turned into glass sculptures at a central London museum.
The couples have been asked to kiss for 90 seconds with a special paste inside their mouths that sets to form a cast.
Artist Charlie Murphy used the casts to create the £1,000 sculptures that are on display at the Science Museum.
"It is a very different experience kissing different people and I wanted to see what that looked like," Miss Murphy said.
"This is a sculpture that's the negative space of a kiss.
"It's a kind of love token, a trophy, because glass is a very beautiful optical material."
Kimberley Smith, 24, and James Davis, 29, were the first volunteers to take part.
The paste was then removed and moulded into a glass sculpture
They held their kiss in front of cheering onlookers before spitting bits of paste debris into a bucket.
Miss Smith, from Surrey, said: "It didn't really feel like a kiss, there was a lot of paste inside the mouth.
"It was more a question of keeping in position than having a kiss. It was a pretty strange sensation."
Mr Davis added: "The first 15 seconds was a bit tough as the mixture was still a bit runny, but as time went on it did feel more and more natural.
"But after around a minute I was desperate to move."
Looking at the resulting pink cast, he said: "It's a nice thing that our kiss is going to be immortalised forever in glass. It's quite romantic really."