Is there a difference in Marc Jacobs and Marc By Marc Jacobs?

Yes, there is.

Marc Jacobs:

- was the original start of the brand

-more expensive

-more runway wearable only, very unqiue pieces, dressy

-better materials- stones, sliks, and etc.

Marc by Marc Jacobs:

-More everyday/casual/ fun style

-less expensive

-2nd to Marc Jacobs' label

-it's the younger line of Marc Jacobs, to make the brand popular for younger (maybe less rich) people too!

Both:

-Both are very stylish and will be commented on by viewers!!