Billie Eilish appeared on   The Howard Stern Show and discussed having COVID-19.

Billie suffered a breakthrough COVID case in August, despite being fully vaccinated.

Billie credits taking COVID-19 vaccine.

Billie says she would’ve died without the COVID-19 vaccine.

Billie also revealed that she still deals with COVID side affects.

Billie added that having COVID was a “horrible experience.”

Billie also appeared on “Saturday Night Live” last weekend.

Billie impressed fans with opening monologue and musical performance.

Billie also released new “Happier Than Ever” album in 2021.