The dress rehearsal went great, but now it's show time.
Sarah Lancaster, whose Chuck character Ellie became a mom last season, welcomed her first child with her husband, Matthew Jacobs, earlier this summer, E! News confirmed Monday.
And good news, the tyke's name (not to mention his existence) is no longer top-secret.
Weighing 8 pounds, 7 ounces, Oliver Michael Jacobs was born June 29 in Los Angeles.
"We feel so fortunate for every minute we get to spend with our healthy and happy baby," the proud parents told People, which first reported the happy news.
Lancaster and Jacobs revealed that they were expecting when they swapped vows in January after two years together.
Unfortunately for Chuck fans, Lancaster won't be pulling double duty as an onscreen mom to daughter Clara and offscreen mom to son Oliver for much longer. The NBC spy dramedy's fifth and final season premieres Oct. 21.