The 50-year-old has been recognised for services to golf, 10 years after becoming an MBE.
Catriona, who grew up in North Berwick was absolutely delighted when she opened her post to find the news that she was to receive the honour.
She said it was "quite a surprise" and she was "very excited" to get the recognition for her achievements.
"It's a huge honour for myself, for the team and for woman's golf", she added. --- She said the victory on "home soil" had been "very special".
Her family are looking forward to travelling down to Buckingham Palace to see her receive the honour.