Oh, Hilary's wearing my Missoni Mantella Wrap!
I didn't know anyone famous had one...
Sorry, back to topic - I quite like the purple jeans and the fringe boots, but I don't think I'd wear them in the way that either of them are wearing them, personally. I marginally prefer Rachel's look, as the colours (of the jeans and boots) are richer; but I wouldn't combine them with white, personally (I think it kills the richness).
If I was going to wear the jeans and the boots together, I'd probably wear them with a purple top (probably in a shade or two darker than the jeans) and carry a tan, or reddish brown, bag.
I know this isn't the question, but if I wanted to wear the purple jeans with the wrap, I'd wear them with black boots. Similarly, if I wanted to wear the tan boots with the wrap, I'd wear them with black jeans and a simple, long black top.
If I was forced to wear the wrap with both purple jeans and fringed boots, I think Rachel's jeans and boots would look better with it than Hilary's do.
BTW, this is how the wrap looks with black jeans and boots. I, personally, think it would look better if the top worn with it was black, or a darker, warmer, neutral, too (even though there is blush pink in the wrap):