Less than Perfect - Season 1 Episode 17
Picture Perfect Party

In celebration of two years in NY, Claude decides to throw a party at her place. But when Will says hell go (a direct result from his publicists attempt to popularize his image), she changes her party from casual to fancy. The only thing she wasnt counting on was Will showing up in casual clothes and turning her party into exactly what she wanted to avoid. In the end Ramona questions Claude about the reasons of her sadness and shows her that even though her party might not be the fanciest people sure are having fun.