She can't be tamed!

Miley Cyrus stripped down and bared all for David LaChapelle's new photography book Lost + Found, and although she's made a big effort to tone down her antics in recent years, a new report claims she's making sure she stays just as wild in the bedroom!

"She works had to keep their sex life hot, she doesn't want it to ever get stale. Lately, she's been studying tantric sex and trying to talk Liam into learning it with her," a source dished to NW magazine. That's hot!

The "Come & Get" songstress and fiance Liam Hemsworth don't seem to be in a rush to tie the knot, but if their romps are this steamy, we don't think they're in any danger of a breakup.

"I don't envision marriage. I'm 24. I hope I get to live a little bit more. I have too much living to do [before I get married]. Three years ago, if you'd asked me if I'd be here, this happy with this man, I'd have been stunned. I'm just riding this out. In some relationships, you lose yourself by being with someone else. Actually, it made me find myself more.I have no idea what the next three years will bring, but if it's possible to get even happier, I'll take it," she told The Sun on Sunday.

"I didn’t know [we’d get back together]. I’m so crazy I have no idea. But I had something in my heart, it never felt like it was really over. We kept a great friendship really private. It’s good for people to have that space to grow individually. Otherwise when you’re with someone from 16 until 24, you grow into the same person. We got to become individuals. I hope everything stays the same. It feels like nothing changed except we grew up a lot," she added.

It sounds like her priorities are in order!