She’s simply the bestial!

Isabella Rossellini showed off some naughty performance art at the Watermill Center Benefit in the Hamptons this weekend.

The piece, titled “Green Porno,” included ten videos that Rossellini made dressed up as different animals and acting out the way each animal has sex — all set up like X-rated peep shows.

In one, the “Blue Velvet” star is dressed as a praying mantis who tiptoes over to a mantis puppet and mounts it.

“I will approach her carefully,” she says in costume. “I will mount her. I will penetrate her. She will turn her head and she will snatch my head off. She will eat me, but I keep copulating. Nothing stops me.” 

In another she is dressed as a fly, humping a fly puppet. In another she is dressed in a swimsuit swimming among dolphins as she describes their sex life. In another she enacts what it is like to be a horny snail.

The pieces, which were originally created for Robert Redford’s Sundance Channel, also included works from a follow up series she did called “Seduce Me.” 

The works have become extremely popular online and also play on the Criterion Channel and streaming services. 

“For the last 15 years I have been making these films,” Rossellini told Page Six. “They are short films, about two minutes each. I have made 50 of them, but I am presenting ten of them like a peep show.”

When asked if they are for educational purposes, she told us: “They are fun. They are just art for fun.”

Rossellini previously participated in Watermill Center gala, which supports the organization’s year-round experimental art programming.

The “Fearless” actress is close with visual artist Robert Wilson, who founded the avant garde center in 1992, telling us she sometimes bring goodies from her nearby farm.

“I’ve known Bob for about 25 years,” she told us. “I live not far from here, about an hour away.” “So I come here and bring my eggs and so we stayed friends,” she said.

Rosellini owns Mama Farm in Brookhaven, a 25-acre property she founded to “foster the next generation of environmental stewards” through “education and preservation of biodiversity.”

She has posed for portraits for Wilson and appeared in his 1999 musical “The Days Before: Death, Destruction and Detroit III.”

The benefit event, titled “‘Scribble,” drew guests including singer Rufus Wainwright, socialites Arden Wohl, Debbie Bancroft, and New York Social Diary’s Lee Fryd, who took in works that included a naked woman painted in red who poured milk on herself, a masked man playing a horn, and a group throwing around inflatables.