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10 March 2013, 10:25
The 'R.I.P.' singer along with boy band star Harry Styles have all been posting about the holiday.
The likes of Rita Ora and Harry Styles have all been taking to Twitter this morning (10th March) to wish their mums and fans a happy Mother's Day.
Alongside stars including Olly Murs and The Saturdays, the world of pop has been marking the occasion by praising their mums across the social networking site, as well as wishing everything across the UK a good day.
"Happy mammas day to the strongest woman on this planet, my mother," Rita tweeted. "I'm blessed to have you. Thank you."
Check out a picture Rita tweeted of her spending time with her mum below (Credit: Twitter):
One Direction singer Harry Styles posted a simple short message to all of his followers, saying: "Happy Mother's Day, hope you had a good one. xx."
"HAPPY MOTHERS DAY TO ALL THE MUMS OUT THERE!!" 'Army Of Two' singer Olly wrote. "Specially to my Nanna, Auntie, sister & Mum!! Love ya all! X."
"Happy Mother's day to my mum and all mums and mummas to be :-) have a wonderful day x x," expecting mother Rochelle Wiseman from The Saturdays added.
The 'All Fired Up' singer is due to give birth to her first child with husband Marvin Humes from JLS later this year.