Dionne Warwick has paid tribute to "sweetheart" Bobbi Kristina Brown

Speaking on Andy Cohen's 'Watch What Happens Live' show, the 'I Say A Little Prayer' hitmaker said: "She was a sweetheart, she will be missed, she was a good girl.

"It's not easy. It's [manageable] because of our faith that Bobbi is with a much bigger and more powerful person, or thing, that she's in much better hands now."

Family friend Oprah Winfrey simply posted on Twitter: "Peace at last! #BobbiKristina (sic)"

Kylie Jenner, 17, also posted an emotional tribute to Bobbi - who had been in a coma since being found unresponsive in her bath in January - calling the incident "so sad" and insisting she'd "never forget" her.

She tweeted: "Rest in peace #BobbiKristina. Got a chance to hang out with u once & I'll never forget it or you! Ugh this is so sad :( (sic)."

Meanwhile, 'Stay With Me' hitmaker Sam Smith has sent his "love and thoughts" to her family, saying he hopes both Bobbi and her late mother Whitney Houston "rest in peace".

He wrote on Instagram: "The most heartbreaking tale. May you both rest in peace, and find the happiness and contentment you couldn't find in this world, in the next. My love and thoughts with all their family and friends on this sad night xx (sic)."

Other tributes have poured in from Snoop Dogg, Leona Lewis and several other famous faces, with rapper Missy Elliott tweeting to say she's "sending prayers" to her family including Bobbi's father Bobby Brown and her maternal grandmother Cissy Houston.

She wrote: "My heart is truly heavy May u rest in peace with your mommy #BobbiKristina sending prayers 2 the Brown/Houston family

"No parent ever think of burying their child be4 they go so extra prayers 4BobbyBrown & Cissy Houston Rest #BobbiKristina (sic)."

The news of Bobbi's death was revealed by a family representative who said she was "Finally at peace in the arms of God".