has reportedly split from her boyfriend.
The actress-turned-fashion designer and actor Justin Bartha have decided to call time on their two-year relationship, according to People magazine.
Sources insist the split was amicable and nobody else is involved.
The news comes just five months after it was rumoured 'The Hangover' star Justin was planning to propose, with a friend saying: "He's in love and just waiting for the right time."
When they first started dating
in 2008, Ashley, 24, reportedly told friends she thought 32-year-old Justin was "the one" for her.
A source: "Ashley is so in love and really happy with Justin, even though it's only been six months. She has been telling her family how much she loves this guy and how sweet he is."
Last year, Justin revealed how Ashley wouldn't give him fashion advice
despite her having three successful clothing labels with twin sister Mary-Kate.
When asked if she tells him what to wear, Justin said: "Clearly not. That's what she does for a living, but she definitely doesn't tell me what to wear - she's not shallow."