Chyna is in the midst of a legal war against the Kardashians, claiming that they sabotaged her reality show Rob & Chyna.
Chyna, a former stripper, follows Lani on the social media app; it is unknown when she started following her.
Lani, who is a New York strip club worker, does not follow Chyna back.
The drama started on Tuesday when a video from Saturday surfaced of Tristan and Lani at the rooftop bar PH-D in Manhattan.
They were captured smooching inside.