Was she intentionally showing me her bra?

The other day i was talking a girl i like, and she's also shown good signs of interest in me. She was sitting across from me on a couch, leaning to her side. She was wearing a crop top, but one long enough that didn't show any skin when standing normally. At some points she put her arm up, and i could see abit of the side of her body. I doubt she wasn't aware of this, then she did something with her arm to reveal a lot of the front of her sports bra and kept it like this for at least a couple seconds. Did she do this intentionally to attract me or was it accidental?
Was she intentionally showing me her bra?
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