Hilary Duff and Mike Comrie looked like very friendly exes when they headed to a Halloween party together over the weekend.

Paparazzi photographed Duff and Comrie walking hand-in-hand into the Casamigos Annual Halloween Party in Los Angeles Friday night. The 27-year-old actress dressed as a tooth fairy, according to Us Weekly, and was all smiles as she strolled into the bash with her estranged husband, who was decked out in a tuxedo.

On Saturday, the duo was spotted together again buying Halloween decorations with their son, Luca, in Hollywood.
Duff and Comrie announced their separation in January after more than three years of marriage. Although they have been seen together many times since then, the "Chasing the Sun" singer previously dismissed speculation they are back together.

"I'm separated from my husband right now, which has been a very difficult thing to go through, but we have a lot of love for each other and we have this beautiful baby," she told Billboard in July, adding that there is a song on her upcoming album "about my separation and my love for this person, that maybe we're not meant to be together, maybe we are. It's very, very personal."