Tammy Wells, the advertising face of retail chain Briscoes, is celebrating 30 years in the role.

"The wonderful thing is it's paid the mortgage and educated our kids and how lucky am I?" Wells told Seven Sharp.

Briscoes chief executive Rod Duke said that when he first saw Wells' audition tape, "it was instant".

Wells said she was originally "so wired, so weeeeee", fortunately she had been able to tone it down as she got older.

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"It's more 'me' now than that sort of wired lady," she said.

She had copied her screen style from Heather Eggleston an early presenter from TV game show It's in the Bag. "I just did what she did and she was so full of beans and so full of energy," Wells said.