Maria Shriver is 'so happy for' her son Patrick ... nepo baby strip down for a slightly incestuous scene involving his younger brother Lochlan (Sam Nivola) during last week's premiere.

It's not just Patrick "I've Had 10 Years of Acting Classes" Schwarzenegger.

The star of the hit HBO show's third season shared the moment he told his mom, TODAY contributor Maria Shriver ... awkward conversation with his younger brother, Lochlan. Patrick Schwarzenegger ...

and mom Victoria (Par­ker Posey), as well as younger brother Lochlan (Sam Nivola) and sister Piper (Sarah Catherine Hook). On her son landing the role, Shriver, who shares Patrick with ex Arnold ...

The premiere episode introduces a strange dynamic between Saxon and his younger siblings Piper (Sarah Catherine Hook) and Lochlan (Sam Nivola). Following last Sunday’s premiere, Patrick shared a ...

Patrick Schwarzenegger and Maria Shriver attend the premiere of ... episode introduces a strange dynamic between Saxon and his younger siblings Piper (Sarah Catherine Hook) and Lochlan (Sam ...