Girls what does it mean when a girl keeps bending over in front of you and keeps changing her necklace every time you see her?

For the first two times I just thought she was not paying attention that I was there but after she bent over the couch in front of me to give her friend a drink before sitting right next to her. I'm definitely sure that doing that 4 times out of the 4 times that I have seen her means something. What I have no clue. Thanks to that I know that she wears pretty pink panties.
I also noticed that she keeps changing her necklace. I have commented on her necklace before how it was pretty in the past. Now she keeps changing it where as before she always wore the same one.
Girls what does it mean when a girl keeps bending over in front of you and keeps changing her necklace every time you see her?
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