Whilst pregnant it is not advisable to wear a bra with wires. Your change of breast size both during and after pregnancy can affect your milk ducts if you wear a bra that is underwired. A good quality soft cup bra with a wide underband support and a slight stretch in the cup to accomodate change of breast size will be comfortable to wear, whilst giving you the support you require.
A very good bra is offered by www.shops.ebay.co.uk/Three-Sisters-Lingerie in B to F cup fitting 34 to 44 Bust at £18.99 to £20.99 for a PACK of 3 Bras. Feedback rating 99.8%. over 11,000 sold on ebay.Also available MATERNITY TIGHTS 40 denier BLACK 36-44 hip £1.00 per pair NORMAL RETAIL £3.00