It’s going to be a star-studded Glee Season Finale on Thursday and we’ve got your sneak peek (in pics) at the episode that will bring Season 4 to a close.

Meredith Baxter and Patty Duke play a lesbian couple on the episode, who inspire Blaine to visit a jewelry store to pick out a special item for Kurt. And while we don’t know whether Kurt accepts Blaine’s proposal, it is rumoured that the women may also return in Season 5 to mentor the gay couple.

Meredith and Patty join a long list of celebrities to guest on the series, including Kate Hudson, Sarah Jessica Parker, Gwyneth Paltrow, Carol Burnett, Kathy Griffin, John Stamos, Britney Spears, Kristin Chenoweth, Neil Patrick Harris, Olivia Newton John and many more.

See the photos below to get your inside look at the episode which will air at 9 p.m. on Thursday, May 9 on Global.

And tell us what you think – will Kurt accept Blaine’s marriage proposal? Tell us in the comments below!