She's set to take to the stage during the 70th anniversary celebrations of VE Day on Saturday.
And Katherine Jenkins looked ready for action in a loose white shirt that showed off just a hint of her baby bump as she stepped out in London on Friday after rehearsals.
The 34-year-old mezzo-soprano - who is expecting her first child with her husband Andrew Levitas - showed no sign of nerves ahead of the Royal British Legion concert at Horse Guards Parade in St James's Park.
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Excited: Katherine Jenkins stepped out in London on Friday as she prepared to perform during the VE Day 70: A Party to Remember concert at Horse Guards Parade in St James's Park on Saturday
The 1940s-themed 'Party to Remember' musical extravaganza will see performances from a wide range of stars including Pixie Lott and Staus Quo, and will be broadcast on on BBC 1 and Radio 2.
The event is part of a three-day celebration to commemorate Victory in Europe (VE) Day when Germany surrendered to the Allies.
Katherine was dressed down in a smart, shirt-style smock top, with the belt knotted around her waist accentuating her growing bump.
Mother-to-be: The Welsh beauty is expecting her first child with her husband Andrew Levitas
Covering up: The 34-year-old star donned a smart white shirt paired with skinny jeans
Chic: Katherine set off her ensemble with a pair of patent black stilettos and large sunglasses
Big day ahead: Katherine headed home to get some rest before performing in St James's Park
She paired the look with black skinny jeans and simple stilettos, and was toting a brown leather bag over one arm.
The patriotic Welsh beauty, who regularly performs for British troops abroad, wore her hair pulled back in a ponytail.
It's been a whirlwind year for Katherine, who announced her pregnancy last month via a sweet Instagram snap.
Eclectic mix: The 'Party to Remember' concert will see performances from a wide range of! stars including Pixie Lott and Staus Quo
Keeping a low profile: Katherine has been lying low since announcing her pregnancy
All smiles: The singer can't wait to welcome her first child with her artist husband this autumn
She wed artist Andrew last September following a speedy engagement, and the pair couldn't be more excited to become parents.
In a statement released to MailOnline, she said: 'We are overjoyed to be expecting our first child in the autumn.
'Starting a family and moving into this exciting phase of our lives is a blessing for which we are incredibly grateful. We eagerly await the arrival of our little girl!'
International love: Katherine and her American husband keep in touch via Skype when work commitments tear them apart
Entourage: Katherine was surrounded by a large group of security and staff members
High-profile gig: The VE Day concert will be broadcast on BBC 1 and Radio 2
Elegant as ever: The mezzo-soprano accessorised with diamond stud earrings and a pretty pendant necklace
Source : http://www.dailymail.co.uk/tvshowbiz/article-3073957/Pregnant-Katherine-Jenkins-displays-baby-bump-ahead-VE-Day-concert.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
