Katy Perry: Mackin' on Miley

7/18/2008 6:21 PM PDT BY TMZ STAFF
The latest Miley news is sure to give the Disney execs another heart attack -- "I Kissed a Girl" singer Katy Perry wants a little sapphic smooch with the Mouse House moneymaker.

Katy's 23 ... Miley's only 15. Perry might want to wait a few years.