Billie Eilish has made her lack of '90s knowledge very clear during her rise to fame, now adding another classic staple to her list.

After receiving a Lizzie McGuire sleeping bag from YouTube music interviewer Nardwuar, the singer quickly revealed that she has no idea who Hilary Duff is.

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Nardwuar asked Eilish what she thought of celebrity endorsements, prompting her to ask for more information on the gift she was handed.

"So who is Hilary Duff, is the real question," she says.

Eilish was also asked if she will ever have her own trademarked sleeping bag.

"This is hard, of course there will be," she answers.

The singer ends up trying on the sleeping bag after some prodding from Nardwuar, which could fit in perfectly with her well-known baggy wardrobe.

You can check out the full interview below, with the sleeping bag being gifted around the 13-minute mark.

It's hard to believe Eilish doesn't know about the Disney Channel classic, especially with such a memorable score behind it.

The internet has been crazy about Eilish since her mainstream takeover. One fan went as far as recreating the singer’s track “bad guy” by using more than 100 snippets from movies, TV shows and more.

Some of those shows and films include Buffy The Vampire SlayerTwilightGame Of ThronesThe ShiningMaleficent and more.

Some of the scenes used also go along well with the instrumentals of the song. We couldn’t imagine how long it took this person, YouTube username Tiago Teixeira, to make this video.

“This was a lot of work, but it’s far from perfect. I tried to keep it edgy but make sure it keep it safe for every audience,” the person wrote on Reddit when posting a link to the video.

You can check out the pop culture-filled version of Eilish’s “bad guy” below, as well as see the trippy original video if you’re feeling in the mood.

What do you think of Billie Eilish's interview with Nardwuar? Sound off in the comments below!

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