J.Lo & Marc: Skin & BONES!

6/25/2008 1:06 PM PDT BY TMZ STAFF
Just three months after giving birth to twins, Jennifer Lopez is looking like a fly girl in a bikini in Spain -- while her husrunt Marc Anthony can't weigh more than newborn Max and Emme! Is he a preemie?

With all the money they got for the baby pics, couldn't Jen buy him a cheeseburger?!