However, the star took a much longer break from work with her second son Kit, who she welcomed into the world with husband Charlie, in May.
Before arriving back to the BBC sofa, Alex posted how she was feeling before heading to work after her maternity leave.
She wrote on Instagram to mark the moment of her return to the job she loves.
Alex began her post with: “Back to work today. So many different feelings. Anxious about leaving the boys, excited to be back on the show.”
“As soon as I put lipstick on this morning, little Ted looked at me with his huge brown eyes and asked, ‘Where are you going mummy?’ It nearly killed me, but it’s time to go back and I’m looking forward to going back to a job I love, but my goodness, I’ll miss these two. So here we go… the juggle begins,” she concluded.
The Great Celebrity Bake Off for Stand Up To Cancer airs 10 March at 8pm on Channel 4.