The 34-year-old beauty, who had previously split with David McIntosh in February, but things look to be firmly back on track now, with Kelly confirming they are now engaged to be married.
Accompanying a picture of the pair with an 'engaged' balloon, Kelly wrote: 'Lovely weekend in Wigan meeting my new extended family. Such happy times and excited to share my life with the most wonderful man I've ever met.'
Kelly previously split with fitness model David, 27, over fears that he was enjoying her fame too much.
And it has certainly been a whirlwind romance for the brunette beauty, who met McIntosh at a New Year's Eve party and has only been dating him 12 weeks.
Kelly previously had relationships with rugby stars Thom Evans and Danny Cipriani. She was also previously engaged to actor Billy Zane before their relationship ended in 2008.
According to a source David popped the question on Thursday evening as the pair were planning a romantic trip to Dubai. But Kelly took time over the weekend before posting the news to her 244,000 followers on Instagram.
The couple were spotted at London Heathrow airport on Monday evening.