One of the more memorable parts of this week's 'Bachelorette' season finale was when prospective husband J.P. Rosenbaum faced a tough grilling from Ashley Hebert's family.

Especially big sister Chrystie Corns, who even made Ashley cry with her assessment that J.P. is, well, a bit boring and definitely not a good match for her.

Now, in an extraordinary about-face -- brought on by a really awkward family reunion, perhaps? -- 'Extreme Couponing' alum Chrystie says she's had a change of heart.

She's even gone so far as to label J.P. her sister's "knight in shining armor."