The former TOWIE star told MailOnline that while she loved her current 32G chest size, she needed a change to fit with her new slimline figure and daily exercise regime.
She's recently lost 21lbs and wants a 32DD cup size.
"My boobs are too big for my body and they give me regular bad pains in my back," she said.
"I'm not just going to be have them reduced but completely reshaped. I need small implants and a lot of the tissue removing so there is absolutely no sagging skin. My boobs are too big for my body and they give me regular bad pains in my back.
"Don't get me wrong, I love my big boobs but they don't really suit the new me who is exercising four or five times a week and wants to embrace a whole new lifestyle."
Frankie's always been open about her weight struggles – in November last year she revealed she'd lost two stone within eight weeks after embarking on a gruelling training regime and healthy eating plan.
She also spoke about a future breast reduction.
"Losing weight has affected my boobs. It's made them loose and I've got a bad back. I might have a reduction but I don't want to have to take time off my fitness for recovery. Keeping up exercising is my priority."
Frankie recently made a cameo appearance in The Only Way Is Essex, filming a few scenes for the 14th series. She returned to comfort cousin Chloe Sims, who was not only dealing with a break-up, but the meltdown of her relationship with brother Charlie.
The new series of TOWIE kicks off on ITVBe next month… we wonder if we'll be seeing Frankie back again?!
Ten reasons we'd like to be in TOWIE:
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!