Kim Zolciak Still Wearing Wedding Ring Despite Divorce with Kroy Biermann

Kim Zolciak and Kroy Biermann might be in the middle of yet ANOTHER divorce, but you wouldn't know it by looking at her hand and listening to what she's got to say.

The ex-'RHOA' star and her daughter, Brielle Biermann landed at LAX Monday and were asked all about Kim's pending case -- after Kroy recently re-filed divorce docs.

Check this out, 'cause it's interesting -- when KZ is asked if she and Kroy are truly dunzo -- she makes sure to flash her wedding band, which Brielle explicitly points out as still "on."

Kim says she already knew Kroy was going to file again, but indicates she's not really worried about it ... and that, perhaps, he'll pull the docs.

The photog presses Kim on some underlying issues that seem to be affecting her marriage -- like finances, for instance -- and the matriarch says those sorts of weigh on all matrimonies.

Brielle's also got some financial issues of her own -- TMZ was first to report she's on the wrong end of a lawsuit from a credit card company -- but she says that's been handled.

One last thing that stands out in the chat ... Brielle pitches a potential new Bravo show that she thinks could benefit all the 'Real Housewives' kids -- and if Andy Cohen was receptive to it in a recent meeting Kim says they had ... she could be back on reality TV one day.

Lots to digest with this one -- we'll see how it all shakes out, but Kim sounds optimistic.