Introducing Mrs. Foster! Katharine McPhee excitedly tweets her new married name after wedding fiance David Foster in lavish London wedding

Katharine McPhee is a married woman.

The American Idol alum, 35, shared her new name on Twitter on Saturday saying, 'Introducing Katharine Foster.'

She married her fiance David Foster, 69, at the St Yeghiche Armenian Church in South Kensington, London.

Call her Foster! Katherine McPhee shared her new name on Twitter on Saturday saying, 'Introducing Katharine Foster.'

Call her Foster! Katherine McPhee shared her new name on Twitter on Saturday saying, 'Introducing Katharine Foster.'

On Saturday David shared a snap of his new bride in her gown as they sat in a car together after the ceremony.

'I’m in the best seat ever!' He captioned it.

During the ceremony the singer wore a custom strapless ivory Zac Posen gown and afterwards she changed into her 'something blue' in a strapless blue silk  tea-length dress.

The record producer, who produced his wife's first song 13 years ago, looked dashing in a black tuxedo. 

'Exactly 13 years ago today my very first single, Somewhere Over The Rainbow, was released right after Idol. Today... I’m marrying the man who produced it. Life is full of beautiful coincidences, isn’t it? Thank you for taking me over the rainbow, David. ❤️' 

David shared this photo of his new wife on Saturday writing: 'I¿m in the best seat ever!'

David shared this photo of his new wife on Saturday writing: 'I’m in the best seat ever!'

Happy couple! During the ceremony the singer wore a custom strapless ivory Zac Posen gown and afterwards she changed into her 'something blue' in a strapless tea-length dress. David Foster wore an all black tux

Happy couple! During the ceremony the singer wore a custom strapless ivory Zac Posen gown and afterwards she changed into her 'something blue' in a strapless tea-length dress. David Foster wore an all black tux

The Bride: Katharine shared this photo of her in a custom wedding gown on the way to her wedding with her mom

The Bride: Katharine shared this photo of her in a custom wedding gown on the way to her wedding with her mom

There were nearly 100 guests at the wedding, including Foster's two daughters, Sarah and Erin, whom he shared from a previous marriage with Rebecca Dyer.

This will be the music producer's fifth marriage, and Katherine's second.

She was previously married to Nick Cokas from 2008 to 2016 where Foster played the piano at their wedding.

The reception look: She wore a blue silk dress that some fans think is a nod to The Wizard of Oz since Foster produced Katherine's very first single Over the Rainbow

The reception look: She wore a blue silk dress that some fans think is a nod to The Wizard of Oz since Foster produced Katherine's very first single Over the Rainbow

The two sparked dating rumors back in May 2017 while having dinner at Nobu in Malibu and haven't really spoken much about their relationship to the public.

Foster proposed to McPhee back in July 2018 on top of a mountain in Anacapri, Italy.

Celebs like Dr. Phil and Roger Federer were also in attendance at their wedding. 

 

 

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

We are no longer accepting comments on this article.