Piers told sources earlier this week that there would be no celebrities on the guest list as he was planning a "very, very small wedding."
Even though she wasn't in attendance, Holden wrote on her Twitter:
"Piers got married today!! I could not be happier for my lovely friend!! Celia his wife is fabulous! Big party for us lot very soon xx"
She also said that the wedding was "private for his family and there is a party in a couple of weeks we are all going to."
Congratulations to the happy couple!
[Image via Vince Maher/WENN.]