Hello. I'm the eBay person, selling the jerseys. Initially I thought it was just a design, but Nike's UK distributor for the cricket goods have said it is to do with the cups - so user TAGG is correct about the cups - 2 for the world cup and 1 for the Twenty20 world cup. If you check my feeback I sell loads of Nike and adidas goods, with no complaints.
Easiest way for me to prove this is to recommend other Nike cricket suppliers. If you call Fordham Sports in London or if anyone is near Edgbaston cricket ground, you can try the Harborne High Street sports shop or one in West Brom's Pikehelve Street and ask about the stars.
Not sure if you are allowed to give details out but I'm sure you can google it.