The former Hollyoaks actress posted a sultry selfie to Twitter on Tuesday, 8 March before heading out in Majorca to celebrate her big day with friends and family.
She added the caption: "Birthday celebrations with loved ones."
Stephanie hasn't had the easiest time in the past two weeks after boyfriend Jeremy McConnell admitted on TV that he'd slept with another woman following his eviction from the Celebrity Big Brother house, while Stephanie was still inside.
He'd initially denied bedding club dancer Caroline Pope but after Stephanie tweeted and deleted private messages appearing to show Caroline confirming it to her, Jeremy went on Irish TV to admit it was true.
It was later alleged he'd slept with another women but he has not addressed this.
In his TV interview, Jeremy had said he hoped to resume his relationship with Steph as he loved her, but he then did a U-Turn the next day saying to The Mirror: "I'm just done. No smoke without fire. She knows what she's doing, she's a clever girl. I'm so done."
Stephanie, meanwhile, jetted to Majorca to clear her head, but there have been rumours Jez is also over there, after he shared a photo to social media looking suspiciously similar to a picture Steph had previously tweeted of her location.
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