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SandLaurenLime230.jpgShauna Sand and her man -- hubby Laurent Homburger -- are heating up Miami as usual.

Sand, 39, and Homburger, 25, rode a scooter through the city on Thursday ... and of course, Sand was ready to climb on in her sky-high lucite heels.

Things really have changed for them - the couple married in January before filing papers in June to end their union. Sand also filed a restraining order against her hubby.

But -- apparently Sand goes well with a Homburger ... the two were soon back together.

While based on her face in the photos Sand doesn't seem to be loving life, she is clearly loving lime; she later hopped on the scooter in just a lime green bikini.

We love coordinating bikinis with spandex, zip-up mini-dresses ... who doesn't? Right? ... Right?!