Duff has got engaged.
The 29-year-old actress to planning to tie the knot with her boyfriend Matt Rosenberg after he surprised her by popping the question on Tuesday (01.04.14).
The blonde beauty, who has just landed her own show 'Real Girl's Kitchen' on the Cooking Channel, shared the news on her blog: ''This week has seriously just become the best week of my life! As if announcing The Real Girl's Kitchen tv show wasn't enough, Matt just took me by total surprise and proposed...on April Fool's Day of all days! The moment was genuine and sweet (like him!) and I couldn't wait to say yes!
''We are so excited and happy to share our wonderful news with everyone! We both feel so blessed to have the love and support of our family and friends and can't wait to start this new adventure! (sic)''.
Haylie's engagement news comes just three months after her younger sister Hilary, 26, ended her three-year marriage with her husband Mike Comrie.
The pair are determined remain on good terms for the benefit of their two-year-old son Luca.
Meanwhile, Haylie previously dated Nick Zano from 2008 until 2011.