United Kingdom, June 11 -- Julianne Moore thinks Sydney Sweeney is "so talented".

The 64-year-old actress stars alongside Sydney, 27, in Echo Valley, and Julianne has revealed that she relished the experience of playing the blonde beauty's on-screen mother in the new thriller film.

She told Extra: "Sydney's so terrific, she's so available, she's so professional, she's so talented, and we just had a really good time, you know, building the relationship and being with each other.

"I think we're aware of how important this relationship is, the mother-daughter bond, and how much it can hold, how elastic it is, and how far you can push it with each other.

"It can be volatile, especially when kids are younger, when girls are teenagers and y...