Brooke Shields Can Still Fit Into Her Calvin Klein Jeans

09/23/2010 05:34 pm ET | Updated May 25, 2011

Nothing -- not even 30 years -- could come between Brooke Shields and her Calvins.

Shields told Ellen DeGeneres as much on during her talk show this week. The 45-year-old model turned actress revealed she's still able to slip into the same pair of denims she sported at age 15 in her controversial Calvin Klein Jeans ad.