Frankie, who is one fifth of The Saturdays, will take a look at the best in British high street fashion across eight categories along with presenter Lorraine and stylist Mark Heyes.
This year's awards is of particular interest to pregnant Frankie, as Best Maternity Wear has been introduced as a new category to celebrate the imminent birth of the second Royal baby.
"I've always loved British high street fashion, as there's such a great range of styles, brands and the prices are very reasonable," says Frankie. "The high street has been a great place to shop whilst I've been pregnant as so many shops do great maternity ranges now."
'What About Us' singer Frankie, who is expecting her second child with footballer husband Wayne Bridge, adds: "Personally I've always worn a lot of high street clothes and I know the rest of the girls in The Saturdays are big fans of the high street too."
In the two week run-up to the event, Lorraine will show a selection of the best fashion from each award category.
The full list of categories are: Best Department Store, Best Online Retailer, Best Affordable Fashion, Best Premium Brand, Best Shoes, Best Curvy Collection, Best Trendsetter and Best Maternity Wear.
Lorraine viewers will vote for the winners of each category, which will be revealed at the star-studded awards ceremony on 19 May in London. The awards will air a day later on ITV.
The Lorraine High Street Fashion Awards air on 20th May at 8.30am on ITV.
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Best celebrity maternity fashion: