When you purchase diamonds, k-stars or cash in the Starshop with real money, everyone else in your squad gets a mail message with a free gift. The gift depends on what you buy and they’ll know it’s from you! Depending on how much you spend, the gifts are either energy, k-stars, or even diamonds! This is purely a bonus - it doesn’t cost you anything and your squad members will appreciate it! This works both ways of course, so when they make purchases you get gifts!
Other in-app purchases such as #FASHIONGOALS and Triple Threat do not count towards gifts for your squad.