Bravo has yet to officially announce the season 6 cast of "The Real Housewives of Beverly Hills," but it looks like Kyle Richards has given fans a clue as to who will be coming back this season and who are the new additions to the cast.

On Wednesday, Oct. 7, Richards took to Instagram to upload a photo of her, Yolanda Foster, Kathryn Edwards and Erika Jayne on a private plane. The shot was captioned, "NYC bound #squad #310shake."

The photo appears to confirm reports that despite her struggles with Lyme disease, Foster is coming back to join the rest of the Housewives in the show's new season. And though it was reported that Richards is definitely returning for season 6, her sister, Kim, is said to be bowing out to focus on her health and sobriety.

Edwards and Jayne's presence in the private jet also seems to back up the rumors claiming that the two are the newest additions to the show. Edwards is the former wife of NFL star Marcus Allen and is now married to retired NFL player Donnie Edwards. Jayne is a singer whose dance hits "Stars" and "Rollercoaster" made it to the top of the dance music charts. She is married to lawyer Thomas V. Girardi, and it was reported that the couple are friends with Foster and her husband, David.

Earlier this week, Richards also took to the photo sharing site to post a picture of her with Edwards, Taylor Armstrong, Lisa Vanderpump, and "Real Housewives of Atlanta" alum NeNe Leakes while they were in Malibu. The photo sparked rumors that Armstrong, who was last seen on the show in a cameo last year, might be coming back as a full-time cast member. It was also rumored that Leakes might make a cameo on the show. Armstrong confirmed with People that she will be in the reality series but did not give further details about her return.

It was previously reported that Vanderpump, Lisa Rinna, and Eileen Davidson are all returning to the show for its sixth season. Bravo has yet to announce a premiere date for season 6 of "The Real Housewives of Beverly Hills."