While Hilary Duff and estranged husband Mike Comrie may be separated, the two showed that there's no love lost between them, as they both arrived holding hands at a Halloween party in West Hollywood on Friday night (Oct. 24).

Duff and Comrie, who are parents to son Luca, attended the Casamigos Halloween Party with other celebrities including Tim Allen, Paris Hilton, Nina Dobrev and more.

The 'All About You' singer arrived as what appears to be a fairy queen, with white wings on her back and a mini-crown on her head. Comrie, on the other hand, wore a tuxedo and it's not clear to us at least if it was part of a costume, or if he was simply dressing up for the occasion.

Despite their split in January, Duff and Comrie have still been photographed in public together for the sake of their son Luca. In May, Duff told E! News, "We’re really good friends and we have so much respect for each other, and, obviously, Luca is our number one priority. I think we got to a point where we were like, ‘We really need to honor happiness.’ Whatever that is, and however we need to sort that out or work that out, we’re doing that.”

What do you think of Duff's costume?

Devone Byrd, PacificCoastNews

See Hilary Duff + Other Celebrities Without Makeup