Katharine McPhee, 35, MARRIES fiancé David Foster, 69, in a London church ceremony

Katharine McPhee, 35, has reportedly tied the knot with music producer David Foster, 69, eleven months after the couple announced their engagement.

A source told E! News that the couple exchanged their vows at the church of St. Yeghiche in Kensington, London in front of around 100 guests, with the actress wearing a dress by famed designer Zac Posen.

The news comes less than an hour after Katharine took to Instagram to confirm she would be tying the knot with David that day, as she paid tribute to her husband-to-be with a sweet social media post.  

They’re married! Katharine McPhee has reportedly tied the knot with music producer David Foster, eleven months after the couple announced their engagement (pictured during a pre-wedding celebration on Thursday) 

Earlier in the day, Katharine took to Instagram to post a throwback video of her debut single Somewhere Over The Rainbow, 13 years to the day before the couple were set to wed in London.

In the post, Katharine shared a clip of her cover of the Wizard of Oz classic which she released after finishing second on American Idol.

The touching caption read: ‘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. ❤️’

I do!: A source told E! News that the couple exchanged their vows at the church of St. Yeghiche in Kensington, London in front of around 100 guests, with the actress wearing a dress by famed designer Zac Posen (pictured together during a pre-wedding celebration on Thursday)

I do!: A source told E! News that the couple exchanged their vows at the church of St. Yeghiche in Kensington, London in front of around 100 guests, with the actress wearing a dress by famed designer Zac Posen (pictured together during a pre-wedding celebration on Thursday)

Lovely: The news comes less than an hour after Katharine took to Instagram to confirm she would be tying the knot with David that day with a sweet tribute post

Lovely: The news comes less than an hour after Katharine took to Instagram to confirm she would be tying the knot with David that day with a sweet tribute post

Lovely: The caption for the post saw the Scorpion star pay a touching tribute to her husband-to-be, who also producer her cover of Somewhere Over The Rainbow

Lovely: The caption for the post saw the Scorpion star pay a touching tribute to her husband-to-be, who also producer her cover of Somewhere Over The Rainbow

As Katharine sang her heart out in the video, her husband-to-be David accompanied the star on the piano.

And just minutes after the post was shared, American vocal coach Michael Orland hinted they were all in attendance for the ceremony, as he commented: ‘Couldn’t be happier. Now can you hurry? It’s warm in the church while we wait for you. (That’s the crying that will be happening soon – tears of joy).

‘Love you so much and so thrilled for you and David xoxo.’

Glowing: Katharine wore a veil, sash, and bride tiara as she kicked off last of her single days at her bachelorette party before her wedding

Glowing: Katharine wore a veil, sash, and bride tiara as she kicked off last of her single days at her bachelorette party before her wedding 

Foreshadowing: As Katharine sang her heart out in the video, her husband-to-be David accompanied the star on the piano

Foreshadowing: As Katharine sang her heart out in the video, her husband-to-be David accompanied the star on the piano

At last! And just minutes after the post was shared, American vocal coach Michael Orland hinted they were all in attendance for the ceremony

At last! And just minutes after the post was shared, American vocal coach Michael Orland hinted they were all in attendance for the ceremony

Ready and waiting: Singer Carole B Sager also shared a snap of two of the guests in attendance at the church ahead of the ceremony

Ready and waiting: Singer Carole B Sager also shared a snap of two of the guests in attendance at the church ahead of the ceremony

Katharine’s post came after she took to Instagram Stories to share a video of her stellar performance during a family dinner on Wednesday.

Katharine shared that ‘things took an interesting turn when the waitress burst into song,’ over a clip of two of the staff serenading David. 

‘Then I took it to the next level and started to really scare my new family,’ Katharine wrote on a video of her singing and dancing with the staff. 

Exciting: The revelation comes just hours after Katharine donned a chic all-white ensemble to enjoy a sightseeing bus trip around the capital with her friends and family

Exciting: The revelation comes just hours after Katharine donned a chic all-white ensemble to enjoy a sightseeing bus trip around the capital with her friends and family

Lovely: The Smash star was in good spirits as she enjoyed the outing with her mum Peisha (second left) and sister Adriana

Lovely: The Smash star was in good spirits as she enjoyed the outing with her mum Peisha (second left) and sister Adriana

Fun: Katharine's post came after she took to Instagram Stories to share a video of her stellar performance during a family dinner on Wednesday

Fun: Katharine’s post came after she took to Instagram Stories to share a video of her stellar performance during a family dinner on Wednesday

DailyMail.com learned that the couple’s nuptials were expected to take place in London this weekend and will be a small, intimate celebration with around 80 guests.  

But Katharine’s latest post has now confirmed the big day is mere hours away, though the location of the occasion is yet to be revealed.

‘It won’t be a big showbiz wedding like his previous nuptials. This one is more focused on their respective families and very close friends,’ said an insider.  

David’s daughters Sara and Erin Foster – whom he had with Rebecca Dyer – are also in London for the big day as they were spotted leaving the Dorchester Hotel earlier this week.

The happy couple picked up their 90-day marriage license in Beverly Hills in mid May, hinting that the nuptials were on the horizon.

Exciting: Katharine has been enjoying a string of festivities ahead of her wedding to David, including a romantic getaway to Mykonos

Exciting: Katharine has been enjoying a string of festivities ahead of her wedding to David, including a romantic getaway to Mykonos

Katharine has been enjoying a string of festivities ahead of her wedding to David, including a romantic getaway to Mykonos. 

And on the day she was set to the tie the knot, the star joined her family and friends on a sightseeing bus trip around the capital.

The actress wore a stunning full-length lace shirt dress as she and her husband-to-be were joined by her mother Peisha and sister Adriana as they enjoyed the sights of the city from an open top bus. 

The group, which included American Idol vocal coach Michael Orland, then headed to a bar to continue the celebrations.

Close: She and David were first linked in May 2017, and confirmed their engagement in June 2018 after the producer popped the question on the Italian island of Capri

Close: She and David were first linked in May 2017, and confirmed their engagement in June 2018 after the producer popped the question on the Italian island of Capri

Katharine was married to actor Nick Cokas, 54, in February 2008 after three years together. 

The star was seen kissing her married Smash director Michael Morris while she was still with her husband in October 2013.

She filed for divorce in May 2014, with her spokesperson confirming the couple had quietly separated a year previously after four years of marriage.

Katharine then dated her Scorpion co-star Elyes Gabel, 36, for two years.

She and David were first linked in May 2017, and confirmed their engagement in June 2018 after the producer popped the question on the Italian island of Capri. 

Fun-filled: Ahead of the nuptials Katharine enjoyed a wild bachelorette break to Mykonos, days after wrapping up her West End stint in Waitress: The Musical

Fun-filled: Ahead of the nuptials Katharine enjoyed a wild bachelorette break to Mykonos, days after wrapping up her West End stint in Waitress: The Musical 

David has been married four times and has five daughters and seven grandchildren.

He was first married in 1972 to singer B.J Cook and the couple had one daughter, Amy, before divorcing after just under 10 years of marriage.

David married his second wife Rebecca Dyer in 1982 and they had three daughters, Sara, Erin and Jordan. They ended their marriage after four years in 1986.

Moving onto his third marriage, the record mogul wed actress Linda Thompson in 1991 and they collaborated on songs together throughout their marriage – but ended things in 2005.

In a great mood: The actress was seen in her bikini while in Greece last week, as she documented her bachelorette break on social media

In a great mood: The actress was seen in her bikini while in Greece last week, as she documented her bachelorette break on social media

During this marriage, David was step-father to Linda’s sons with Caitlyn Jenner, Brody and Brandon, who grew up living in his home in Malibu.

Upon David’s fourth marriage, he wed Dutch model Yolanda Hadid – mother to stunning supermodel sisters Gigi and Bella Hadid.

After a nine year relationship and four years of marriage, David and the Real Housewives of Beverley Hills star called it quits in 2015.

David had his first daughter, Allison, when he was just 20 and was forced to put her up for adoption before the pair reconciled when she was 30.

Married man: David has been married four times and has five daughters and seven grandchildren

Married man: David has been married four times and has five daughters and seven grandchildren

Read more at DailyMail.co.uk