Found a new picture from this lost episode if anybody is interested
There is not that much out on the web from that lost episode.
Also, there are a few sites that erroneously use images from there to validate that she has had plastic surgery.

Anyone can reconstruct a timeline of her actual size via stills from the show. There have been no sudden shifts, no odd disappearances only to return sporting a new front. Her size now is exactly where you would expect a woman her proportions to be given her track record.
Yes, sometimes she has had a little padding but nothing close to the one-time big size used in the lost episode.
It should be mentioned that there was consideration that she test all three sizes of boob; small, medium and large. That means that she was able to portray all three. They eventually worked it that she was participating in a more limited fashion and the images of her as "large" were more for publicity and only a little to do with the testing phase, i.e. it ended up on the cutting room floor.
Unfortunately I do not think we have caught an episode in the last 6 months.