Kim Zolciak and Kroy Biermann swept their differences under the Christmas tree ... coming together to shower their kids with gifts despite their financial hardships.
Sources close to the estranged couple tell TMZ ... they pulled together the dough they've made selling personal items online over the last few months ... ensuring the 4 kids they share together didn't go without Xmas presents this year.
We're told their brood will always be their priority .