The parade of fabulous Ugly Betty guest stars continues. Supermodel Naomi Campbell is set to guest star on the comedy's season two finale. Campbell was supposed to appear in an earlier episode, but the guest spot never happened. Perhaps she got wind of that "Naomi Campbell tuna meltdown" joke.

Many real-life fashionistas have appeared on the style-conscious show. Victoria Beckham, designer Vera Wang, and Project Runway's Tim Gunn have all had guest-starring roles. Next week's episode, "Burning Questions," will feature an appearance by Project Runway winner Christian Siriano. Campbell's in good company.

Naomi Campbell is notorious for her bad temper, but I think this show is a good fit for her. Fans want the characters to be over-the-top and full of attitude. I just hope she doesn't get into a diva showdown with Vanessa Williams' character, Wilhelmina Slater. Wait -- maybe I do. Betty co-star Becki Newton wasn't sure if Campbell would be playing herself or if she'd have a fictional role. I'd love to see the model poke fun at her own persona like Posh did.

The Ugly Betty season finale will air on Thursday, May 22 at 8pm ET.