Miley Cyrus revealed on Twitter her latest tattoo: a portrait of her grandmother.

The 20-year-old captioned the image with an affectionate message to her "mammie," maternal grandmother Lorretta Finley.

"Because I am her favorite & she is mine," she wrote.

Cyrus got inked by Kat Von D (Miami Ink) for the fourth time. The tattoo artist also posted about her experience inking Cyrus on Instagram:

""Love, love loved tattooing you last night," she wrote.

The Wrecking Ball singer mocked In Touch's slanderous cover featuring her by making it her profile picture on Twitter. The cover features a shot of Cyrus performing Wrecking Ball, with the title -- "Miley Finally Admits: I Need Help."

The cover story focussed on claims of Cyrus' promiscuity since splitting from her former fiancé Liam Hemsworth. The publication suggested that she had been with various men, including Theo Wenner, Mike Will and two other unnamed guys.

Wednesday's episode of South Park will take a jab at the recent Cyrus-Sinead-O'Connor feud. In the spoof, O'Connor helps children's entertainers Yo Gabba Gabba persuade Foofa to stop her self-destructive behavior. Foofa is shown on a cover of Rolling Stone magazine and her raunchy performance at the MTV Music Awards is very publicized.

Cyrus also announced her Bangerz tour via Twitter on Wednesday.

Here is the entire list of tour dates:

Feb. 14 2014
Vancouver, BC Pepsi Live @ Rogers Arena

Feb. 16 2014
Tacoma, WA Tacoma Dome

Feb. 20 2014
Anaheim, CA Honda Center

Feb. 22 2014
Los Angeles, CA Staples Center

Feb. 24 2014
Oakland, CA Oracle Arena

Feb. 25 2014
San Jose, CA SAP Center

Feb. 27 2014
Phoenix, AZ US Airways Center

Mar. 1 2014
Las Vegas, NV MGM Grand Garden Arena

Mar. 4 2014
Denver, CO Pepsi Center

Mar. 6 2014
Omaha, NE CenturyLink Center

Mar. 7 2014
Chicago, IL Allstate Arena

Mar. 9 2014
Milwaukee, WI Bradley Center

Mar. 10 2014
ST Paul, MN Xcel Energy Center

Mar. 12 2014
Dallas, TX American Airlines Center

Mar. 13 2014
Tulsa, OK BOK Center

Mar. 15 2014
San Antonio, TX AT&T Center

Mar. 16 2014
Houston, TX Toyota Center

Mar. 18 2014
New Orleans, LA New Orleans Arena

Mar. 20 2014
Tampa, FL Tampa Bay Times Forum

Mar. 22 2014
Miami, FL American Airlines Arena

Mar. 24 2014
Orlando, FL Amway Center

Mar. 25 2014
Atlanta, GA Philips Arena

Mar. 29 2014
Montreal, QC Bell Center

Mar. 31 2014
Toronto, ON Air Canada Center

Apr. 2 2014
Boston, MA TD Garden

Apr. 3 2014
E. Rutherford, NJ Izod Center

Apr. 5 2014
Brooklyn, NY Barclays Center

Apr. 7 2014
Charlotte, NC Time Warner Cable Arena

Apr. 8 2014
Raleigh, NC PNC Arena

Apr. 10 2014
Washington DC Verizon Center

Apr. 12 2014
Detroit, MI The Palace of Auburn Hills

Apr. 13 2014
Columbus, OH Schottenstein Center

Apr. 15 2014
Kansas City, MO Sprint Center

Apr.16 2014
St Louis, BMO Scottrade Center

Apr. 18 2014
Nashville, TN Bridgestone Arena

Apr. 19 2014
Louisville, KY KFC YUM! Center

Apr. 22 2014
Philadelphia, PA Wells Fargo Center

Apr. 24 2014
Uniondale, NY Nassau Coliseum

Watch the spoof of Sinead O'Connor and Miley Cyrus' feud: