A retired couple from the South West have become the state's latest millionaires after a Lotto ticket they received as a Christmas gift had the division one winning numbers.

The $1.7 million ticket was purchased at a Warwick newsagency by one of their children as part of a festive tradition.

The couple won $1.7 million thanks to the gift. Credit:AFP

“It’s been a long-standing tradition to purchase Lotto tickets for one another at Christmas,” the couple said.

“It’s been a roller coaster of emotions since finding out the news – we even had butterflies making the journey to Lotterywest to claim our prize.”