The mother-of-three showed off her tanned arms as she presented the opening segment with co-host Phillip Schofield.
The dress which also has pleats and lace detailing, retails at £219.
She paired the dress with some classic black strappy sandals from Dune London.
Holly is a fan of Whistles having worn the British brand a number of times whilst presenting This Morning.
Last week she wore them twice, opting for a bright yellow dress last Monday and a floral patterned dress on Wednesday which she also wore the same Dune London shoes with.
Holly took to her 3.7 million Instagram follwers to show off her swishy dress.
As per usual the comments flooded in on how beautiful she looked.
The mother-of-three is also a major fan of popular reality TV series Love Island that has just started it’s fourth series on ITVBe.
On last Mondays episode of This Morning Holly and Phil addressed how much she loved the programme.
Holly said she wanted to fly out to Majorca, where Love Island is being filmed and film a segment for This Morning, she even said she would bring tequila and make margaritas for everyone.
On Sunday nights episode of Love Island Aftersun, Caroline Flack played the clip from This Morning and said Holly was more than welcome to fly out to the villa.
Holly also posted a number of pictures on her social media over the weekend.
One showed her meeting up with her friends, including Emma Bunton and Nicole Appleton.
She hash tagged the post with #girlpower.
Holly can often be seen posting pictures on her social media of herself and her famous pals.