But the 24-year-old Saturdays beauty is reportedly already worried about her pregnancy weight gain.
A source told Star magazine: ‘Frankie is very body conscious. She’s used to being no bigger than a size 8.’
'Its surprised her that she's gained weight this early'
‘She’s already crept up a dress size – it’s surprised her that she’s gained weight this early.’
Frankie, who is set to marry Manchester City footballer Wayne Bridges, 32, in the summer is said to have even joked with pals about not wanting to be a fat bride.
‘She’s joked to pals that she doesn’t want to be a ‘fat bride’, and has told Wayne that the wedding will be sooner, not later,’ the source revealed.
[ asset id="51655" class="rightBlock" ]
The mum-to-be is said to be struggling to keep the baby pounds off ahead of the wedding.
The source added: ‘She’s dreamt of her big day for years and has a set idea of how she wants to look’
‘She knows that if she wants to get married without a massive bump then she needs to move quickly.’
Meanwhile, Frankie is said to also be having a hard time dealing with her emotions.
An insider told us: ‘Frankie’s hormones have been driving her crazy in the past few weeks and she’s been struggling with it all.’
‘She’s been flipping out at Wayne sometimes and has been telling friends she’s crying over silly things.’
'Frankie's looking to her friends for advice'
They revealed that Frankie has been getting advice from fellow band mates Una Healy – a mum-of-one — and mum-to-be Rochelle Wiseman.
‘Frankie’s looking to her friends for advice – Rochelle’s told her all pregnancies are tough at the start [whilst] Una’s told her she’s going to make a fantastic mum,’ the source added.