Other than money, she has nothing that makes her a "star". No talent, no morals, no brains. She doesn't seem to realize that she is a joke, not an idol.
I actually think she realizes EXACTLY what she is, and boy does she use it to make money. Quoting wikipedia here, but according to Forbes magazine "she earned approximately $2 million in 2003–2004,$6.5 million in 2004–2005, and $7 million in 2005–2006." This is from her modeling/acting/business "career", not just from inheritance trusts. She has had a line of purses, a wildly successful perfume line, shoes, hair extensions, clothing, and even a line of champagne.
I'm not going to say she's a role model for anybody, but the girl understands image, how to promote herself, and how headlines in the gossip mags translate into worldwide sales. I wouldn't go so far as to call her smart, but when it comes to her own image she's clearly not stupid.