LIZ LEMON'S BABY FEVER HEATS UP WHEN SHE BEFRIENDS A PREGNANT TEEN. PATTI LUPONE AND JOHN LITHGOW GUEST STAR — Liz befriends a pregnant teenaged donut shop employee, in an attempt to adopt her baby. Back on set, Jenna vies for more attention from the TGS staff as her birthday approaches, but Kenneth's plan to combine her party with one for Tracy derails her efforts. Meanwhile, Jack agrees to go on a guys' night out to keep his mind off of his absent girlfriend, and bonds with Frank over their daddy issues.