Panache & Chantelle sports bras -- are they actually the same?

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I'm thinking about getting one. I usually wear a 34DD. Why did you size up? Should I?

I'd probably try a 36DD...they run kinda snug around (and I like a snug bra) and the cup size seems to fall between sizes, too. Though if you don't have particularly wide/full boobs you might find thee 36D works.