Boobs getting smaller :(

I’m 5’2, around 135 lbs. I started working out around 6 months and have lost 15 lbs since I started. I only recently started lifting.

I was trying on some clothes when I noticed how much smaller my boobs looked. I had decently large sized boobs before, but now they feel smaller and not as perky? Like they lie lower on my chest. Did this happen to you as well?