| Name | Character | Episodes |
|---|---|---|
| Ewan McGregor | Halston | 5 |
| David Pittu | Joe Eula | 5 |
| Rebecca Dayan | Elsa Peretti | 5 |
| Krysta Rodriguez | Liza Minnelli | 5 |
| Maxim Swinton | Young Halston | 4 |
| Bill Pullman | David Mahoney | 3 |
| Sullivan Jones | Ed Austin | 3 |
| Eric T. Miller | James | 3 |
| Jason Kravits | Carl Epstein | 2 |
| Dilone | Pat Cleveland | 2 |
| Vera Farmiga | Adele | 1 |
| Rory Culkin | Joel Schumacher | 1 |
| Kelly Bishop | Eleanor Lambert | 1 |
| Mary Beth Peil | Marta Graham | 1 |
| Maureen Mueller | Housewife | 1 |
| Eden Malyn | Susan | 1 |
| Hannah Jane McMurray | Woman in Ultrasuede Dress | 1 |
| James Waterston | Mike | 1 |
| Andrew Elvis Miller | Angelo Donghia | 1 |
| Matt Walton | Jeff Walkin | 1 |
| Tom Ukah | Derrick | 1 |
| Jacopo Rampini | French PA | 1 |
| Gina Costigan | Female Clinician | 1 |
| Pamela Stewart | Mistress Atelier | 1 |
| Kelly Lester | Saleswoman | 1 |
| Alicia Harding | Real Estate Agent | 1 |
| Juan Carlos Diaz | Oscar De La Renta | 1 |