Ms Kimber won the title wearing one of Mrs O’Brien’s Locopa Design millinery pieces.

‘‘This is huge in the millinery industry and my proudest accomplishment so far,’’ she said.

‘‘A winner is selected from each state and they get to compete against each other at Flemington on Oaks Day for $80,000 plus worth of prizes.

‘‘The competition in Queensland was judged by Wayne Cooper so it is pretty awesome.’’

Mrs O’Brien runs her millinery business from home and the lead-up to the Spring Carnival in Sydney and Melbourne is always her busiest time of year.

Earlier this year she herself placed second in the Vogue Style Stakes at Randwick racecourse on the same day Black Caviar ran and won her final race.

She was competing against more than 100 women, wearing one of her own hats that have made their mark at almost every major meet on the Australia racing scene in recent years.

The mother of identical twin two-year-old boys Sonny and Randy, she also supplied many fascinators to her growing number of loyal customers around the nation for Derby Day at Randwick.

And she went on to win the millinery award at Sensational Sunday at Kembla Grange.

‘‘I have actually sold more than 400 fascinators in the last 12 months,’’ she said.

Most of her fascinators go to international customers online, but she also attends the Kiama Seaside Markets on the third Sunday of every month and Coledale Public School Market on the fourth Sunday.

Mrs O’Brien said she was about to release her new range for the 2013 Spring Racing Carnival.