• e-mail

They tied the knot in a romantic ceremony at the St Yeghiche Armenian Church in South Kensington, London on Friday.

And Katharine McPhee put on a sizzling display as she honeymooned with new husband David Foster on the Amalfi Coast, Italy on Monday.

The singer, 35, exhibited her enviable frame in a busty black string bikini as she joined her music producer husband, 69, for an idyllic yacht trip in Capri.

Bridal glow: Katharine McPhee put on a sizzling display as she honeymooned with new husband David Foster on the Amalfi Coast, Italy on Monday

Smitten: The newlyweds were the picture of true love as they enjoyed a scenic boat trip 

The Waitress actress flaunted her buxom bust and toned midriff in a tiny bikini top as she prepared to dive into the crystalline waters for a spot of snorkelling.

She paired this with a pair of scanty bikini bottoms, which drew the eye to her bronzed legs and peachy derriere as she dived overboard.

Her tresses were pulled into a tousled ponytail while the star showcased her natural beauty by going make-up free. 

Toned: The Waitress actress flaunted her buxom bust and toned midriff in a tiny bikini top as she prepared to dive into the crystalline waters for a spot of snorkelling

Work it: The actress was every inch the beach babe as she dipped her lithe legs in the water at sea

Katharine and David were every inch the happy couple as they chatted aboard the boat, with the hunk shooting his new bride a loving look.

The happy outing comes four days after the couple said their vows in front of famous friends and family.    

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. 

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

Full relaxation mode: The musician was in her element as she paddled away in the large body of waer

Chic: The star kept her tresses off her face with a multicoloured headband and slipped on reflective shades

Cheeky display: Katharine revealed her honed legs and peachy derriere in a pair of thong bikini bottoms

Together: Katharine and David looked smitten as they boarded the yacht together for a day at sea

The singer has changed her legal name after getting wed and took to Twitter after the ceremony, writing: 'Introducing Katharine Foster'.   

Katharine's big day came after she took to Instagram to pay a sweet tribute to now-husband David, as at the time they were just hours away from tying the knot.

In her pre-wedding post, Katharine shared a clip of her cover of the Wizard of Oz classic Somewhere Over The Rainbow, as she told fans it was released 13 years to the day before her wedding. 

In good spirits: She grinned from ear-to-ear during her relaxing trip

Careful! The star narrowly avoided a wardrobe mishap as she played with her bikini top

Lithe: The star showcased her incredible bikini body as she frolicked aboard the lavish boat 

Chic: Katharine later slipped into chic white co-ords, which flashed her taut midriff as she chatted with her new husband

Wow factor: The actress looked stunning as she enjoyed a break from her hectic schedule 

Chilling out: The House Bunny star soaked up the breathtakingly beautiful scenery with a friend during her yacht ride

The 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. '  

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

Looking good: Katharine covered up in the Italian sun with a fuchsia pink kaftan as she chatted with a pal 

Style chameleon: Katharine showed off her stunning summer wardrobe during her time in Italy, while David looked effortlessly cool in a pale lue shirt, navy shorts and matching slip-on shoes 

Chatty: The pair looked in  great spirits as they chatted with friends on a boat 

Fun-filled: The group beamed with delight as they engaged in a lively conversation on their watercraft

David proposed to Katharine back in July 2018 on top of a mountain in Anacapri, Italy.      

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

David has been married four times and has five daughters and seven grandchildren, his last marriage to Yolanda Hadid came to an end in 2017.   

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.

In a great mood: The star also documented her bachelorette getaway in Mykonos by sharing pictures on social media (left on June 21 and right on June 24) 

Eating time: Later that day, the pair stepped out in style with some lunch

Protection: The pair both sported trendy sunglasses, with Katharine rocking circular shades, while David donned classic square frames

In good company: The screen star held onto her phone as she chatted away with her partner 

All in the details: Katharine displayed her naturally radiant complexion as she opted for minimal make-up 

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.  

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, officially divorcing in 2017. 

Married man: David has been married four times and has five daughters and seven grandchildren... his most recent marriage was to Real Housewives of Beverly Hills star Yolanda Hadid, the couple divorced in 2017 (pictured together in March)