Gypsy Rose Blanchard Has No Prenup with Estranged Husband Ryan Anderson

Gypsy Rose Blanchard recently put pen to paper to make her divorce from Ryan Anderson official -- but there's no prenup in place ... although the consequences of that are a bit hazy. Sources with direct knowledge tell TMZ Gypsy and her now-estranged husband didn't hash out a prenup before they got hitched -- while Gypsy was still incarcerated -- because they thought their marriage was the real deal. Best laid…