The Saturdays star, who gave birth to daughter Alaia-Mai on 20 May, looked stunning in her black shirt dress, belted at the waist, and black heels.
She added a pop of colour with the same orange handbag she was toting at the Radio 2 studios last week.
Rochelle rejoined The Saturdays at the end of last month following her maternity leave, which means early morning starts once again.
She tweeted today: "Just a casual 4am pick up....can only mean one thing #daybreak."
Rochelle, 24, recently told The Mirror's Notebook magazine that she's not worried about losing her baby weight quickly - she's more concerned with spending time with little Alaia-Mai.
"Now it's strange trying to fit into the clothes I used to wear. I haven't lost all the weight - I'm not in a rush, it's like whatever. I'm more worried about the baby than myself and what I look like."
The Saturdays, who include Una Healy, Frankie Sandford, Mollie King and Vanessa White, have been on the promo trail for their new single 'Gentleman'.
Today, their schedule included a chat and performance on Lorraine.
Watch The Saturdays' music video for 'Gentleman' below:
From TOWIE to Made In Chelsea, top stories of June in pictures!
Copyright: Twitter Kim Kardashian