“When the Party’s Over” it’s time for some sexy selfies.

Billie Eilish, 21, let it all hang out in a series of wild new Instagram snaps posted in the wee hours of this morning, showing off a low-cut black slip dress and Gucci tights in an after-hours bedroom photo shoot.

Captioning the photos, “you’re looking right at me,” the “Happier Than Ever” singer revealed a fair amount of cleavage in a long black frock in the images, adding black patent platform heels.

She rocked the goth-style outfit while posing on the floor next to a bed in several pictures, lifting her legs in one shot to reveal a closeup of her sheer black designer legwear and super-high shoes.

In another snapshot, the Grammy winner takes a blurry selfie while laughing at the camera, and shows off her hair spread across a tartan blanket in yet another photo.

Along with her plunging dress, Eilish — who recently told Vogue her “body was gaslighting” her “for years” — sported multiple layered necklaces, what appears to be a pair of pearl drop earrings and a velvet scrunchy on her wrist.

Instagram followers were mixed on the singer’s late-night selfie spree.

One comment, which garnered plenty of likes, read, “Me when I spend the night at grandmas house and get into her medicine cabinet,” while another said, “This is giving early 2000s disposable camera verging on early myspace s—tty digital camera vibes.”

Several fans pointed out her resemblance to Wednesday Addams, but others — like Avril Lavigne, who left two fire emojis on the post — were digging her look.

“Yes, respectfully,” wrote DJ Chantel Jeffries.

Although it’s unclear whose home she’s posing in during the photo shoot, her snaps come after news that the singer’s family home in Los Angeles was burglarized last week.

This also isn’t the first sexy shoot the singer has had in recent weeks; last month, she celebrated her 21st birthday in a head-turning corset-style Santa outfit.

With the Grammys ahead, we’re already looking forward to what Eilish will wear on the red carpet next.