I'm a big fan of Delta (got a google alert about this and decided to come check it out) and I'm also a fan of Carrie.
Anyways, I can see the similarities but you can't really say that Delta copied Carrie because I'm sure she didn't pick the photo to be used on the album or anything else that went on it. Also! Delta brought back the swirly things that was on her first album, released in 2003 before she got cancer.
Yes, Delta is pop and she's new to the US market but she's huge in Australia. Her album's out in July and her single's out on radio now.
Hope I don't seem like I'm trying to promote her but I'll definitely be posting about Carrie as well because I love her too. Delta and Carrie are similar, to me, because they both have a very clean, positive image.
