07/02/2012 02:34 pm ET

'The Good Wife' Season 4: Kristin Chenoweth, Alan Cumming Tweet Updates From Set

Lockhart/Gardner is back to work. "The Good Wife" Season 4 is currently being shot, and its ripe with guest stars.

Joining the cast that includes Julianna Margulies, Alan Cumming, Christine Baranski and Josh Charles in Season 4 is "ER" veteran Maura Tierney, "GCB" scene-stealer Kristin Chenoweth and stage and screen icon Nathan Lane. Tierney's character, Maddie, will come into play with Peter Florrick's (Chris Noth) campaign for governor. Chenoweth will play a political reporter who targets Peter and Alicia, and Lane will play a manager who is assigned to Lockhart/Gardner to cut costs.

Cumming and Chenoweth took to Twitter while shooting Season 4 of "The Good Wife".

Meanwhile, Cumming shared a photo of himself back in costume as Eli Gold.

"The Good Wife" Season 4 will also introduce viewers to Kalinda's estranged -- and creepy -- husband. British actor Marc Warren will play the part.

"The Good Wife" returns to CBS this fall for Season 4. Find out which other shows will be back by clicking through the slideshow below.