Two new sharks are joining the tank!

Bethenny Frankel and Alex Rodriguez have both signed on to be Season 9 guest investors on ABC's hit show Shark Tank, the two stars announced via Twitter on Monday, May 15.

"I guess I am a shark after all. Watch out @ABCSharkTank — comin' for you this fall. Are you as excited as I am? #SharkTank," Bethenny wrote on the micro-blogging site.

MORE: Bethenny Frankel Talks Rumors She's Dating 'Modern Family' Star Eric Stonestreet — See What She Revealed!

"Can't wait to swim with the sharks @ABCSharkTank #GuestShark," A-Rod similarly tweeted.

bethenny frankel alex rodriguez getty images

Bethenny (left) and Alex (right).

Bethenny and Alex will serve as guest sharks in a few upcoming episodes. Virgin Group founder Richard Branson, Spanx creator Sara Blakely, and Glaceau and Bai founder Rohan Oza have also signed on to appear on Shark Tank's ninth season.

MORE: Biggest 'Shark Tank' Fails — See 7 Products That Didn't Make It After the Show!

The show's six regular sharks — Mark Cuban, Robert Herjavec, Kevin O'Leary, Daymond John, Barbara Corcoran, and Lori Greiner — are also set to return to the tank for another season.

Past guest sharks have included actor Ashton Kutcher, businessman Steve Tisch, self-made billionaire John Paul DeJoria, actor Jeff Foxworthy, GoPro founder Nick Woodman, music manager Troy Carter, and venture investor Chris Sacca.

'shark tank' getty images

The Shark Tank sharks.

Bethenny is the founder of Skinnygirl, a mega-successful company with products including low-calorie cocktails and snacks and a line of sparkling waters called Skinnygirl Sparklers. The 46-year-old mogul has also authored four self-help books and previously hosted her own daytime talk show, Bethenny.

The mom-of-one — she has a seven-year-old daughter, Bryn Hoppy, with ex-husband Jason Hoppy — additionally stars on Bravo's reality show, The Real Housewives of New York City, previously appeared on The Apprentice: Martha Stewart, and once had her own Bravo reality show, Bethenny Ever After. She's estimated to be worth $25 million from all her ventures.

MORE: 'Shark Tank' Star Daymond John Gets Candid About His Health as He Reveals Private Cancer Battle

Baseball star Alex — who recently revealed his high-profile relationship with singer Jennifer Lopez! — retired from the New York Yankees in 2016. The 41-year-old athlete is also the founder and CEO of A-ROD CORP, a private holding company with businesses in both the US and Latin America. His net worth is a whopping $252 million.

Check out the gallery to see Shark Tank‘s most successful products!