Instead of jetting off to a far-flung holiday destination, the former Made In Chelsea star plans to swap the tropical locations for a staycation in the UK.
"I would love to go to the countryside or the British seaside," Millie said in an interview with HELLO!.
Her nine-month-old daughter is already crawling, but when she has high hopes for making her first steps a very memorable experience. "In my head, I have a vision of Sienna taking her first steps on a beach – probably unrealistic! But I would love to explore more of the UK.
WATCH: Millie Mackintosh opens up about her birth experience
"We travelled with Sienna when she was three months old and so I think we could do it. It excites me, new traditions to start," she continued.
Millie and Hugo took Sienna on her first international holiday to Santorini in July, staying in the five-star hotel Andronis Luxury Suites. Their luxurious accommodation featured a sheltered private pool area overlooking the sea.
Baby Sienna went on her first international holiday at three months old
While Millie said she travelled a lot prior to the COVID-19 pandemic, she revealed becoming a mum during lockdown has made her appreciate spending more time at home.
"Lockdown has really taught me to slow down, appreciate a slower pace of life, find joy in the little things, and to be really grateful for what we have. I'm very lucky with what I do, I normally travel a lot and it's really grounded me being in one place – I think that happens naturally when you have a young baby because it does limit your freedom to do things.
Millie revealed Sienna has learnt to crawl
"In some ways I think it's come at quite a good time to just be at home, focus on having time with Sienna," Millie explained.
The doting mum revealed her little girl learnt to crawl over the Christmas holidays and has even started to dance, but she's hoping her first steps will still be a few weeks away.
Laughing, Millie joked: "She can't stand up on her own yet but she's pulling herself up. I reckon by the time she's one she'll be walking. I'm hoping it's not for another three months, we've just baby-proofed everything! I'm just getting used to her crawling." Perhaps lockdown travel restrictions will have eased by then.
WaterWipes – which Millie said is among her top five baby products – has launched 100% biodegradable baby wipes and an eco jargon dictionary to help parents make informed choices when choosing baby products.