However, Rob threw in his two cents anyway, saying:
[Image via Johnny Louis/Brian To/WENN.]
We're actually surprised this hasn't happened before!
This isn't the first crossover for the reality TV franchise; Lisa's castmates Brandi Glanville and Yolanda Foster paid a visit to New York's Kristen Taekman and Carole Radziwill last year. In fact, Brandi was the one who recommended Kristen for the NYC cast.
Luckily, this meeting is a friendly one too, with Heather seeking advice from her famous friend.
Ch-ch-check out the EXCLUSIVE clip (below) to see if Lisa gives quality counsel:
Which California cast would you rather be a part of, Beverly Hills or Orange County?
The Real Housewives of Orange County airs Mondays at 9PM ET/PT on Bravo.
[Image via Bravo.]