Refined Lines Convertible Push up bra has a liquid booster and as such offers an exceptional boost and great clevage.  This bra has a super smooth finish so you can wear it under any oufit. You can also convert this to halter neck, cross back, wear with clear straps and it has an extra special function to enable you to pull the back down lower than a normal bra so that you can wear it with your lower back outfits.