Hey cut your mum some slack. She was talking about the difference between what is seen as acceptable by the general public now versus what was seen as acceptable by the general public then, she wasn't necessarily giving her own opinion. She is right, the general attitude towards the pregnant body has changed a lot over the past 20 years. The norm with maternity clothes used to be tent like, covering neck to knee, often garish, floral or gingham, and frankly pretty hideous. Attitudes and maternity fashion has evolved a lot since then (thankfully!), but thats OK, we are allowed to have different perspectives on these things based on the generation we were bought up in. It doesn't necessarily mean all older people think showing your belly if vulgar, times have just changed and some people move with the times more than others.

And as for the original question, not I don't think it was wrong of you. If I generally wore bikinis I would wear one while pregnant.