The 23-year-old star - who gave birth to her first child Astala in April - is set to marry musician Thomas Cohen later this year and she celebrated her last weeks of freedom by having a night out with her girlfriends.
However, she admitted it was tamer than most hen nights and she was home by 11pm as little Astala has left her feeling exhausted.
After posting a picture of herself - complete with a bride`s veil, which had fake penises on - with one of her pals, she wrote: "Back home after my hen night at 11 as so exhausted from being woken up at 6am by baby this morning. It was just a little dinner at a sushi restaurant with the bridesmaids and a few close friends, but was nice to see everyone! I was given all manner of weird penis themed items in classic hen do style though so at least we did that part right even if the wild partying and male strippers were sadly absent!! (sic)"
However, Peaches - who had been kept in the dark about what to expect on her hen night - and her pals did get to play some rude games during the dinner.
She wrote on twitter: "Playing pin the penis on the gross ripped guy. Great."