As previewed here at Baseline, Serena Williams guest-judged the final collections delivered by Project Runway's quartet of master competitors on Thursday.

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"I feel like they've been working really hard for so long, and I expected a lot," she told Extra, "and that's what I got—I got a lot."

Williams sported a dress from her eponymous S by Serena line, revealing her own stellar style game while critiquing that of others.

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Her favorite for the title: Sergio Guadarrama, who did not win but did get engaged to his partner during the part-2 finale.

Season 18, that's a wrap (dress).