OLSEN TWINS

GOOD GENES OR

GOOD DOCS?

6/14/2014 12:01 AM PDT BY TMZ STAFF
0613_olsen_twins_genes_launchAshley and Mary-Kate Olsen's beauty is not going out of style.

Here's the famous "Full House" sisters at a fashion event in New York City shortly after celebrating their 18th birthday back in 2004 (top) and ten years later -- the now 28-year-old fraternal twinsies at another fashion event in New York City (bottom).

Two of a kind.

The question is...