Selena Gomez is once again using her platform for good.

The star, who has been very open about her battle with lupus over the past few years, recently appeared on TikTok Live to discuss her experience with medication for water weight gain.

Gomez has also opened up in the past about her body image and how difficult it is for people to comment on her body, and fans praised her for being open with them again.

"I tend to retain a lot of water, which happens quite normally, and when I'm off it, I tend to lose things like weight," the star said.

"I just want to say and encourage people who are embarrassed about what they are going through and that no one really knows what they are going through.

Gomez further explained that she is "not a model," meaning that she does not believe she conforms to a particular ideal image of beauty (of course, many would disagree there, but the important thing is how she feels about herself).

"Yes, I do! I can't be a model and I never will be," she said.

"And I think they're great. That's the end of it. If not, then ...... Go away. Because honestly, I don't believe in shaming people's bodies or anything."

Tell them, Serena.