Real Housewives of Beverly Hills star Lisa Rinna is catching heat after she sent Lisa Vanderpump a pill covered cupcake tweet on Twitter, while LVP is still grieving the loss of her brother who committed suicide last year.

Speaking on 'Watch What Happens Live' with Andy Cohen, Rinna claimed she “had no idea” about the accident.

 "A day after her birthday, nobody had wished her a happy birthday on Twitter, I actually felt bad," she said.

"I thought, 'Well, that’s not cool. I’m going to wish her a happy birthday.' That’s my cheeky — you know, we have pill humor!... She knows I meant no harm. I would never ever do that. Ever.”

"We didn’t see LVP for long, she stopped filming after Denise [Richards]’ wedding. I did not know it was suicide. I reached out to LVP immediately as soon as I found out how insensitive my tweet ended up being," Rinna rote on social media to fans who blaste her mean-spirited tweet.