Well, besides expander stuff, hers would have to be saline because she's clearly over the "limits" of silicone implant sizes in any region I'm aware of. Highest I've heard of silicone implants in the current market is like, 1490cc, or something like that. In the US it's still capped (for cosmetic/non-reconstructive) at 800cc, higher in some other countries... but nowhere near what any estimates for Heidi would be lol. I think it's agreed she's def well over 2000cc, don't know if she's ever said her exact count.