If you can get away with a smaller run, maybe try the hand made route.
Vista print the pink and black background, then get a stamp made for the bubbles, stamp some glue and actual gold leaf the bubbles.
Would look crazy awesome, and crafty, and be heaps of fun, and fuck the cost.
Have you heard of toner reactive foil?
If a business card is printed with a laser printer, you can put it through a laminator with toner reactive foil & the foil will stick to the toner.
Heidi Swapp has actually created her own range of products based on this idea called 'Minc. Machine'. So maybe look that up on you tube so you can see how it works.
I think though, It probably wouldn't work unless the cards are uncoated.