Katz,cindies,and the like are good to go to if your stopping by on the way to a visit,but their products are no better and more expensive than what you'd find online.
You can never go wrong with Victorias secret (5 for$27 painties! !) Nordstrom is a favorite of mine,as is,the Trashy brand. But as a provider I'm happy to receive gifts,and have no problem modeling, taking pics etc in anything I'm gifted. I appreciate anything that I receive. Maybe ask your regular provider where she likes to shop or if she has a wish list at any certain place or website.