The blonde beauty was walking into the training college to speak to Chief Executive Claire about encouraging young people to become engineers when her microphone fell out of place.
Steph appeared slightly red-faced as she realised the awkward fashion mishap as her microphone swung around behind her.
Ever the professional, the 35-year-old quickly grabbed the piece of sound equipment and placed it back on the waistband of her trousers.
She then addressed the blunder, telling viewers at home: “Oh, my mic is jumping off again there.”
It came just minutes before she urged Claire to conduct her interview inside the college and walk around to showcase the work that was taking place.
The presenter almost revealed a lot more than viewers at home were expecting as she sat alongside host Charlie Stayt.
As the pair looked through the morning’s papers, Steph – who looked chic in a navy shift dress – seemingly suffered a wardrobe malfunction.
However, she appeared completely unfazed by the prospect that she may have just exposed her underwear to the nation as she continued with the segment.
BBC Breakfast airs on BBC One at 6am.