Miley Cyrus Tiffany

Miley Cyrus in a barely-there leotard and leather short-shorts earlier this year (left) and Tiffany in an acid-washed jean jacket with patches back in the day (right). George Pimentel/WireImage | Linda Matlow, Rex USA

Long before there were pop tarts, squeaky-clean teen queens roamed the earth, and now one of them -- '80s singing sensation Tiffany -- is speaking out about reigning "it" girl Miley Cyrus and her controversial clothing (or lack thereof).

"I know that there are a lot of people that say, well, when you are so young you shouldn't be sexy," the Debbie Gibson nemesis told Us Weekly of 17-year-old Cyrus, who, in recent months, has rocked skimpy leotards, a see-through sundress, sky-high Christian Louboutin heels, and, of course, a $25,000 corset.

"I think that in today's world you kind of have to be [sexy] -- to be competitive in the market," says 38-year-old Tiffany who, in her heyday, kept her fair skin covered up with long-sleeved shirts and acid-washed jean jackets. "I think that she is doing it appropriately."

As opposed to who? Taylor Momsen?

The red-haired "I Think We're Alone Now" singer also told Us Weekly that she believes the former "Hannah Montana" star's parents, Billy Ray and Tish Cyrus, are "guiding her right," and that ultimately, "Miley Cyrus is on a great track."

Hmm... didn't Tiffany end up posing for Playboy in 2002? Just sayin'.

In related news, read StyleList's take on Cyrus's nearly naked style.

Get more on Miley Cyrus at PopEater