Apr 7, 2011 12:33 GMT  ·  By

The other night, Tori Spelling made a comeback on the red carpet at an event for Oxygen, the network that hosts her reality show, looking very daring in a halterneck that showed off her ample and sunken cleavage. It’s been the talk of the town ever since.

The reality star long denied reports of plastic surgery but she eventually owned up to two interventions on her chest.

When she came out on the red carpet in the satin blue dress with the plunging neckline, all eyes were on her chest – and, in particular, on the dent that was on top of each breast, hinting that somehow the implants had moved.

Hollywood Life spoke to various plastic surgeons (who haven’t treated and are not acquainted with Tori) about the probable causes of this and they seem to agree that she’s pregnant, most likely.

Indeed, for some weeks, celebrity bloggers have also picked up on the fact that she seems to be carrying a little extra weight, which has prompted them to speculate that she’s with child again.

The explanation for the wonky implants seems to confirm that.

“It looks like they’ve sunk and they moved. They’ve dropped. Pregnancy generally changes the shape and size,” Dr. Steven Fallek of NYC says for the aforementioned e-zine.

Plastic surgery industry consultant Wendy Lewis agrees: the only possible explanation for Tori’s sunken chest is pregnancy.

“Pregnancy impacts the appearance of the breasts in obvious ways – skin stretches out and thins, stretch marks may appear and implants may shift in response to these changes,” Lewis says.

“The bigger the implant, the more chances of sagging after pregnancy,” the expert adds. Tori must be pregnant in 3 or 4 months, judging by how her breasts look.

Other experts consulted by the same e-zine agree on both counts – and say that Tori should probably consider a lift after giving birth, but no sooner than 6 months after she’s done nursing.