Flirting? Was she trying to use her breasts to get my attention?

I was leaving the office and was saying goodby to a female coworker in another department. She was sitting behind her desk. As we spoke she was speaking softly and I said I couldn't hear her and stepped a little closer. When I did she streached her arms and leaned back in her chair, which pushed her breasts out and her hips toward me. I say it was flirting, anyone else?