How to keep blue outlines from forming around white objects reflecting sunlight?

When I take photos of white objects (like flowers) in direct sunlight a blurry blue outline appears. I assume it's because of the light reflecting off the petals and back into the camera lens, but, I don't know how to keep it from happening.

I have a Nikon P90 which is a point-and-shoot camera, but, it's about as close to a DSLR as you can get, without actually being one. It lets me play with all the settings (ISO, shutter speed, aperture, etc) and I don't have to confuse it into doing what I want, like a lot of point-and-shoot's. I'm pretty new to photography, so, if I'm going to need a filter (one that I could hold in front of the lens) or some kind of light reflector, please give me a link.

Chromatic aberration seen commonly is secondary lateral chromatic aberration.

Lay people call this "purple fringing" for the green/magenta artifacts seen at the corners of images on bright, contrasty things.

Nikon ED and Canon L lenses use special glass to reduce fringing

Adobe Photoshop and Lightroom can automatically remove the fringing by using special profiles for each lens used by the photographer

There's a webinar that discusses how to reduce this using Photoshop, but I will have to find it.

Until then, here is one that will help you understand the necessity of calibrating and profiling your monitor

http://www.viddler.com/explore/macgroup/videos/3/

It's called chromatic aberration, it's usually worse with the lower quality lenses you get in a point and shoot - although your Nikon P90 should be better than those small point and shoots. You could try stopping down the aperture a bit, make sure you are setting the exposure for the petals of the flower. Also direct sunlight can be too harsh, try taking a photo in the shade, or on a cloudy day instead.