Lip job, put it down to shell fish allergy

Earlier, she'd swiftly swatted all talk of cosmetic enhancement , describing the very thought as "ridiculous" and "nonsense." And Kangna Ranaut had categorically stated that she'd never opt for the scalpel to enhance her beauty, no matter what.
Much has changed, over the years.
At a recent event, Kangy showed up in a chic avatar, displaying cleavage... that attracted greater attention since her twin assets seemed a lot more fuller, causing collective eye balls to pop!! Her dismal bustline was clearly a matter of the past.
Besides, when she was spotted with swollen lips, Kangy put it down to a shell fish allergy. The fishy truth, as revealed by close sources, was that Kangy had opted for a lip job to add fullness to her severely thin lips.

Please explain to me the highlighted parts.
Though I guess the first part means "Kangy claimed the swollen lips was because of allergy that caused by eating shell fish".

Source : http://in.movies.yahoo.com/news-detail/90461/Kangys-Truly-Enhanced.html