E!’s new reality show, Rob & Chyna, which follows Rob Kardashian and fiancée Blac Chyna, delivered 2.7M total viewers, 1.9M adults 18-49, 1.2M adults 18-34, 1.4M women 18-49 and 1.0M women 18-34 in its series premiere on Sunday, September 11 at 9 PM, in L+3 Day stats.

That makes it cable’s most watched unscripted launch this year among adults 18-34, women 18-34 and women 18-49, E! boasts, adding that it marks the second consecutive year E! has delivered cable’s biggest unscripted series debut. The other also is Kardashian related, being the I Am Cait debut in 2015; it ran for two seasons.

The Kardashian mothership, Keeping Up with the Kardashiansis in its 12th season with no sign of stopping, ratings-wise. In its ratings news, E! gave the show credit for contributing mightily to the network’s overall ratings growth.

Rob & Chyna also was the most tweeted non-sports TV series on Sunday, E! noted. The six episode, one-hour series will continue to air Sundays at 9 PM this fall on the NBCU cable network.