The 51-year-old shocker joined her Royals castmates on the Extra lounge chair in Universal City.
Ruler Helena looked glorious in a nude and black lace top with a lot of cleavage on display.
She completed the look in shrewd black trousers and heeled pumps.
Her on-screen little girl Alexandra Park looked similarly gorgeousin a LBD with lower leg boots.
Her ‘twin brother’ and heir to the TV throne William Moseley went smart casual, blending a dark grey suit jacket over a dark shirt, jeans and Chelsea boots.
The royal family sat down for a spirited talk with the extra host about the forthcoming third period of the E! drama.
The show recounts the narrative of the fictional Henstridge family’s open and private lives are thrown into disarray when the oldest son and heir to the throne is killed in an accident.