Lauren looked glam in a plunging hot pink dress and matching pink lips, as she snuggled up to birthday girl Billi for a photo.
Captioning the snap, Billi said: "Diva @laurengoodgerofficial #goodtimes."
Bikram yoga owner Billi, who turned 26 on Saturday (2 November), looked gorgeous in a black ruffle dress teamed with black patent peep toe heels.
Meanwhile, TOWIE's Frankie was all smiles as she posed for a group photo. Posting the snap to Instagram, Billi declared: "Love my girls."
Billi's best friend Cara, who wore a black and white colour-block dress, also posted a photo of Billi blowing out the candles on her cake.
She tweeted: "Happy Birthday to My Best B**ch @BilliMucklow. Welcome to the 26 Club. Love You xx."
But it seems party girl Lauren didn't stay the whole night. She later tweeted: "Thank u for a lovely night @BilliMucklow now home in bed left all the girls partying #bore whoop! Had lots fun love you all night."
It certainly was a weekend of celebrations for Lauren, who also toasted her one year anniversary with boyfriend Jake McLean yesterday.
She said last night (3 November): "Had lovely chilled day with @McleanJake on our 1st Year anniversary. Late lunch, we was going to go @TheXFactor live show but we both too chilled."
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