Kim Kardashian treated to private string orchestra on Mother's Day

Kanye West surprised wife Kim Kardashian on America's Mother's Day (08May16) by hiring a string orchestra to perform in their home.

The rapper is known for his over-the-top gifts and he didn't disappoint on Sunday, as mother-of-two Kim woke up to an all-female ensemble playing in their Bel Air, California mansion.

"Mother's Day surprise in my living room!" the thrilled reality star shared on Snapchat.com as she documented the lavish gift.

The musicians all wore flowing white skirts as they performed songs picked out by the couple's two-year-old daughter, North, who joined her mum to watch the private concert.

Tracks included Let It Go from the tot's favourite movie, Frozen, and Annie musical hits It's a Hard Knock Life and Tomorrow.

But that wasn't all - Kanye also had a bench covered in an array of bright pink flowers delivered for his wife, who gave birth to son Saint in December (15).

Kanye previously celebrated Mother's Day in 2015 by filling Kim's hotel room with flowers as they spent the day apart, while he recruited a different string quartet to surprise her with a performance at a restaurant, reports People.com.

Meanwhile, sister Kourtney Kardashian enjoyed a more low-key start to Mother's Day as she shared a photo of her son Mason, daughter Penelope, and baby boy Reign in their pyjamas on Twitter.com.

"Feeling overwhelmed with love & blessings being able to be a mommy to these three angel babies," she captioned the sweet image of her kids with ex-boyfriend Scott Disick. "Happy Mother's Day!"

Kardashian family matriarch Kris Jenner also marked the occasion online in a series of tweets, in which she expressed her gratitude for her growing family.

"Happy Mothers Day to all the amazing Moms out there!!!" she wrote beside an old photo of herself and her six children: Kim, Kourtney, Khloe, Rob, Kendall and Kylie. "Lots of love #myheart #blessed".

She continued, "Happy Mother's Day!! Today is not about the party, the glamour, the guests (although you guys know I love a good party!)... It's about celebrating motherhood & all the blessings that brings!

"I love nothing more in this world than being a mother and a grandmother. My amazing children and my beautiful grandbabies are my everything!! Being there through good and bad... Life's most joyful moments & the most challenging, toughest times, always with unconditional love... that's what being a mother means to me."

Kris' heartfelt comments emerged two days after her only son, Rob, confirmed reports he is to become a father, as his fiancee, model Blac Chyna, is pregnant with their first child.

The couple has continued to shock friends, family and fans since it began dating in January (16), after announcing its engagement in April (16) and revealing its baby news on Friday (06May16).

Ironically, Blac also shares a three-year-old son, named King Cairo, with her ex-fiance, rapper Tyga, who is now dating Rob's youngest half-sister Kylie.