Steve Hash popped the question to the TV producer during a romantic vacation in Paris, France in July (16), and now the couple is heading down the aisle.

The bride-to-be has been dating Hash for almost six years and they are parents to daughter Harley, 17 months.

"I was so surprised and overwhelmed with happiness and excitement," Ally tells "We are having fun planning a lovely wedding at our family's home in Connecticut."

The happy news emerges less than a year after Ally went public with her Lyme disease battle, after struggling with symptoms of the tick-borne illness since she was seven. Doctors failed to correctly diagnose her for 14 years, but in 2015, she announced she was "finally cured".

The 31-year-old, who previously appeared on MTV reality show Rich Girls, documented her health battle in her book, Bite Me.

Ally is one of four children from Tommy's marriage to first wife Susan. They divorced in 2000 after 20 years together, and the designer went on to wed Dee Ocleppo, with whom he has a young son.