Billie Eilish has worried fans with her most recent Instagram post, which contains a photo of bite marks on her forearms.

After sharing a carousel showcasing her Fourth of July activities, some of the 22-year-old singer’s 119 million followers expressed concern.

One snapshot showed Eilish — who revealed she has never been broken up with — with her arms crossed as she displayed two rings indented on her skin.

In another snapshot, in which the hitmaker held her arm up, a round bruise was visible.

One fan asked, ‘Is she okay?’ while another wrote, ‘Explain the bites?’

In another snapshot, in which the hitmaker held her arm up, a round bruise was visible.

One fan asked, ‘Is she okay?’ while another wrote, ‘Explain the bites?’

Billie provided no context for the bites and bruises, but used two firework emoji in her caption.

Elsewhere in the slideshow, she posed in a pink bikini top with a white towel wrapped around her waist.

It comes after last month Billie covered Interview magazine, along with an accompanying chat with singer Lana Del Rey.

The two musicians covered multiple subjects, including Billie’s latest album Hit Me Hard And Soft, their friendship, and romantic relationships.

Eilish opened up: ‘I have a power issue and a control issue, and I also don’t like being vulnerable in a romantic way. It makes me feel uncomfortable, and I don’t know how many times I’ve really been in love.’

The pop star elaborated, ‘I think there’s different versions of love, and I think that you can be in love and it might not be deep. 

‘I’m not going to get too in detail, because I’m going to be rude, but I’ve never been dumped, and also, I’ve never been broken up with. I’ve only done the breaking up.’

When Lana suggested Billie could be ‘running from a relationship,’ she agreed.