Don't miss my cameo on tonight's episode of @NewGirlonFOX! We hit the golf course for some laughs— Holly Sonders (@holly_sonders) April 6, 2015
(She was actually a day off - the tweet appeared on Monday, New Girl airs on Tuesdays. It's her first cameo, she's allowed to make a mistake.)
We don't know anything more about Sonders' appearance other than what's in her tweet: It's a cameo (she's not in the episode for very long), and she joins the cast on the golf course. No surprise to see Sonders showing up in a FOX series, really: After all, she left Golf Channel for FOX Sports this year. It makes sense for the network to promote her across its channels. She's certainly a star with the potential to become an even bigger star.
So, to satisfy Sonders' legions of fans, here's a video about Sonders' appearance in Golf.com's "Most Beautiful Women in Golf 2015" feature: