Hilary has been leaning on her sister Haylie these days. The two are inseparable hanging out in Vancouver while Haylie is working on a project. A newly single Hilary still has to work with her ex to sort out their stalker issue, but apparently she's pretty pissed that Joel moved on so quickly with Nicole. He's trying to call her, but she won't talk to him. US Weekly reports:

A source tells Us he has been calling Duff, but she “doesn’t want to talk to him” (the pair split in late November after two and a half years).

Adds the source, “She can’t believe he’s dating Nicole and thinks she’s a skank.”

When Duff, 19, heard about Richie’s arrest, “she asked if Nicole had been coming from Joel’s,” says the source. “She kept saying she never knew Joel at all.”

Good thing Hilary has her big sis to hang out with during this hard time. More of Hilary shopping around with Haylie in Vancouver so