Romance Novel Covers

My earliest memory of a romance novel was one by Danielle Steel that my mom kept in her dresser drawer. I don't remember the name of that particular book, but I remember the cover with a shirtless man and seductivly dressed woman sharing a magical embrace in front of a random background. Since then, I have always considered romance novel covers as corny and typical of that genre. Now, twenty years after I saw my first romance novel, I'm curious to see if this genre's covers have changed since then. Below are a few novels I found on Amazon.com.

As you can see, they really haven't changed much.