I often times wear lace bralettes ($10.00 each at Walmart - No Boundaries brand) with silicone A/B cup inserts. These bralettes have pockets for the inserts. Depending upon Lily's work situation, they are barely/rarely detectable unless worn under a light colored dress shirt. I wear golf shirts which helps conceal them. If the inserts are recognizable, they look like nothing more than small man boobs so shouldn't raise anyone's radar.
I also generally wear panty liners as most women do so, too. Also, when Lily goes to the bathroom to pee, I assume she MUST sit rather than stand. She should also be required to use TP to wipe just as most women do. I know I do these things and I'm not even a sissy. I'm just a happy cross dresser.
Just to add a bit of understanding to this. I came here as a DL wearing 24/7. In June of 2020 I started my journey of cross dressing. In August of 2021 I basically went to cross dressing full time. Wearing panties and diapers just didn't work for me. While I truly enjoyed my time in diapers (24/7 for about 3 years), my dresses, bra, breast forms, panties, stockings, and nighties win hands down. I always wear panties. Most of the time I'm wearing a bra or bralette, and I'm always wearing stockings if I'm wearing long slacks. The dresses are reserved for wearing at home. Things just change in our lives. I'm not as active on ADISC as I used to be as I'm on a forum for cross dressers and transgender people that addresses my interests more in depth. But, I do still have enough interest that I stop by here regularly.