Has it been described properly?

not "reminiscent of" but "reminiscing about". A thing that reminds someone of something else is "reminiscent of" that other thing. A person thinking fondly about something in the past is "reminiscing about" that past event. It's usually farther in the past than earlier in the same evening,like years ago, but you could use it.

"Flamboyant" usually means something like overly loud or gaudy. It tends to be slightly pejorative. Unless you are intentionally speaking slightingly of Tibetan ethnic dress, something like "colorful" or "beautiful" or maybe "beautiful and colorful" is less value-laden.

And as David says, "changed from....into..." or "exchanged her...for..."

There is a certain zest and zeal or colorful energy in flamboyant.