Up All Night

Molly Shannon is taking her armpit-sniff nostrils to Up All Night.

The former Saturday Night Live star, who stopped by Glee on season two, has been cast as a single mother who works as a producer on Ava's talk show, according to William Keck of TV Guide Magazine.

Look for Shannon to appear on the November 23 episodes, but sources say the sitcom will be happy to write her in for more if all goes well.

Up All Night returns on November 2 with a new installment.