A changed body gets photographed. The years of therapy, thyroid tests, surgery consultations and quiet decisions behind it usually do not. These women all went through something visible, and most of them have since explained what it actually involved.
Christina Aguilera Named The Pressure Before She Named The Number

Christina Aguilera spent most of her career being discussed in terms of her body, and pregnancy shifted that conversation into something harsher. By 2013 the change in her appearance was obvious enough that it became a story of its own. What set her response apart was that she talked openly about the insecurity and industry pressure rather than presenting a clean before and after. The singer with the four octave range has been consistent since about refusing to treat her size as a public referendum. She has described periods where the scrutiny affected her willingness to perform at all. The number attached to the change matters far less than the fact she named what caused the pressure in the first place.