I just saw the wildest thing ever!!! I was watching a re-run (originally aired 3/15/11) of this episode of HGTV's My First Place and this engaged couple Jessica and Josh were trying to buy a home in San Francisco, California before their wedding. The girl could have been your twin (at the very least your sister) according to the photo you have posted here on the website. I was freaking out... I was like I know that girl... same cute hairstyle, hair color, skin coloring, eye color, even down to the glasses she was wearing. I've searched everywhere on their website to find a photo of her but can't find one. Wish I would've taken one with my camera on my phone for you now.
Anywho... just thought I'd let you know you have a doppelganger look-a-like in the USA. If that particular episode comes on again; I'll try to get a photo of her, but it's not showing online like it will.