The 'X Factor' judge is working with an organisation in Kenya to build a new school in the country, as well as volunteering in communities, alongside the Maasai people who gifted her a farmyard goat, reported MTV.
"By the way, no big deal or anything but, one of Maasai communities gave me a goat for my birthday!I named him billy." she tweeted.
The 'Heart Attack' singer did not head home for her birthday as she wanted a more meaningful and memorable way to celebrate it.
"This trip has been such an amazing experience. Yesterday was the best birthday of my entire life!!. This place is absolutely incredible. I'm so in love with Kenya. I'm so sad I'm leaving," she wrote.