But the Page 3 model struggled to contain her ample chest as she streaked through the lounge to the bedroom.
Lacey's streak came on the same day that the show's latest twist was revealed, with one of the housemates set to be named the "dictator" and the others having to follow his or her orders.
The task will see the dictator and two guards living a life of luxury while the rest of the HMs survive on basic rations.
But the housemates will get the chance to "overthrow" the dictator by taking part in games and challenges - and if they succeed they will win a luxury food budget.
Rylan Clark staged his own more brazen streak last week.
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