Now, I'm not sure how well these two qualify as celebrities, but I noticed a couple of headlines recently linking celebrities to Barbie collecting. Specifically, the articles talked about Biz Markie (Yeah, I didn't know who he was either) and Erika Jayne (Ditto).
Read about them here and here.
This got me thinking: What other (actual) celebrities have a love of Barbie? Have you heard of anyone?