Walsh, 32, said she would prefer comfort over style at this stage of her life, reported Contactmusic.
"I opted for flat shoes (at Wimbledon)- it was always going to happen but I think I've finally given up on heels, I can only wear them for a short amount of time", she said.
The former 'Girls Aloud' singer who is in a relationship with Justin Scott is feeling good and relaxed as she grows closer to her due date.
"I'm feeling really good now that I'm officially in my third trimester, apart from sometimes getting restless legs and a bit of baby brain, I'm much more relaxed.