The 35-year-old from Northampton glowed as she donned a baby blue midi dress for the latest edition of the ITV show.
Her outfit featured a colourful and striking floral pattern all over with capped short sleeves.
Wearing her brunette tresses down in natural wave, she opted for a natural-looking make-up and nude lips.
On one arm she wore a silver bracelet but otherwise the meteorologist kept her accessories to a minimum.
The scenes come after Laura was spotted at the Baby Show in Birmingham last month when she appeared to be doing a spot of shopping ahead of becoming a mum.
She was seen looking at an array of baby-related products including choosing a bib.
Good Morning Britain weather girl Laura Tobin shows off her baby bump
Laura Tobin shows off her growing baby bump
I am having my own little ray of sunshine, yes I’m having a baby
Laura left Good Morning Britain viewers in shock last month when she announced live on air that she was expecting her first child with husband Dean Brown.
“I am having my own little ray of sunshine, yes I’m having a baby,” she beamed.
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Piers Morgan and Susanna Reid were both visibly shocked by the wonderful news after Laura admitted that she’d only told her close family members while most of her relatives found out during her live announcement.
Laura Tobin announced her pregnancy last month live on air Laura Tobin in pictures Tue, May 2, 2017
Good Morning Britain weather girl Laura Tobin in pictures.
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Laura Tobin announced her pregnancy live on Good Morning Britain
Laura Tobin announced her pregnancy last month live on air
“I have a tear in my eye,” cried Susanna, 46.
Laura has been married to her spouse for seven years after tying the knot in 2010.
Good Morning Britain airs weekdays on ITV at 6am.