Kelly Osbourne, Xtina: New Feud

To us, this is more “oh, sad” than “oh, snap!”

Clearly, a few blonde starlets have some not-so-latent weighty issues going on, and they're surfacing on cable TV.

It's no secret that Kelly Osbourne hasn’t exactly been Christina Aguilera's biggest fan over the years, but Osbourne, 26, took their feud to new, very public heights during a recent episode of E!’s “Fashion Police.”

After host Joan Rivers, 78, said the 30-year-old “Voice” coach looked “stuffed into” a Givenchy LBD at an event last month (and likened her to “Snooki’s Scandinavian cousin”), Osbourne unleashed.

“Maybe she’s just becoming the fat bitch she was born to be. I don’t know. She was a c--- to me. And she bought my house!

“She called me fat for so many f---ing years,” Osbourne continued, “so you know what? F----- you, you’re fat, too.”

Wowza.

Clearly, Osbourne’s own struggles with body image — despite her 50-plus-pound weight loss — still linger.

Last February, she told Us Weekly: “I took more hell for being fat than I did for being an absolute raging drug addict. I will never understand that.”