This is a major moment in LGBTQ+ music history: Smith is now the first publicly non-binary solo artist with a No. 1 song, while Petras is the first publicly transgender solo artist to top the Hot 100.

The work is largely expected to dominate next week’s chart. Billboard Hot 100 Top 10 Singles “Unholy,” Sam Smith and Kim Petras “Bad Habit,” Steve Lacy “As It Was,” Harry Styles ...

Singers Sam Smith and Kim Petras have made history with their chart-topping collaborative single “Unholy,” marking a first for both artists as well as for trans and nonbinary artists.

The German singer-songwriter hit the coveted No. 1 spot with "Unholy," a collaboration with Sam Smith — who also made history as the first nonbinary artist to reach the top of the chart.

The chart-topping pop song's impressive feat marks Smith's highest entry on the US chart since 2014's "Stay with Me" reached No. 2 and Petras' first-ever song to even reach the Hot 100 whatsoever.