Former, current and future Olympians and Paralympians have taken to Twitter today ahead of the opening ceremony of the Olympic Games.

The official London 2012 Twitter page kicked off the tweets this morning, with a message to followers: “Good morning world. It’s 0 days to go! RT if you are ready for #London2012.”

Olympian Denise Lewis, who was part of the London 2012 bid team in Singapore in 2005, wrote: “I kid you not. I have butterflies in my stomach. Struggled to eat breakfast. This is it, the day that unifies all our ambitions as a Nation.”

Paralympian Dame Tanni Grey-Thompson wrote: “Feeling very olympic today...”

Diver Tom Daley, who will compete this summer, wrote: “I can’t believe the @Olympics @London2012 start today!!!! So excited!!”

Weightlifter Zoe Smith was tweeting about her preparations for the Olympics, and wrote: “Good news is that I only have 1.5kg left to lose! This is possibly the best position I’ve been in ahead of a comp. Everything going so well.”

And it wasn’t just members of Team GB tweeting. American swimmer Michael Phelps posted a picture of some good luck signs which had been made for Team USA.