TV presenter and author Katie welcomed her first child on 14 March, saying at the time she and long-time boyfriend James felt "overwhelmed with happiness".
Since then, the star has (understandably) been away from social media, spending time with her little girl. But today she returned to post a message thanking fans.
Katie wrote: "Thank you for all congratulations messages and lovely kind words! I'm reading all the messages and screen-shotting some of them to show Belle when she's older (sic)."
A message on behalf of the blonde star's Katie Piper Foundation had earlier suggested well wishers make a donation rather than send a card.
Ahead of giving birth, 30-year-old Katie told Reveal she couldn't be happier in life.
"I'm really enjoying what I'm doing as a career, I'm thrilled the foundation is going from strength to strength. Personally, I'm at a point where I didn't know I'd ever be, so it's really amazing. I'm really grateful."
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Copyright: Rex Features WENN/Matthew Taylor/Daniel Deme/Josiah True/Matthre Taylor/Joe