Andrea Bess Frank, daughter of Connie and Peter Frank of Plymouth, Minn. and Robert Michael Potashnick, son of Bobbi and Larry Potashnick of St. Louis have announced their engagement. 

She is the granddaughter of Min and Nate Zweigbaum of Minnetonka, Minn. and Evey and Irv Balto of Golden Valley, Minn. and the late Erwin Frank, formerly of St. Paul, Minn. He is the grandson of the late Bess and the late Max Broder and the late Birdie and the late Morris Potashnick, all formerly from St. Louis, Mo.

The bride-to-be is a graduate of Robindale Armstrong High School, Plymouth, Minn. and the University of Wisconsin-Madison, where she earned a degree in Dietetics. She is currently a registered dietitian for the Howard Area Community Center in Chicago, Ill. She is pursuing her Master’s Degree in Nutrition Education from Rosalind Franklin University of Medicine and Science.

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Her fiancé is a graduate of Parkway Central High School, a graduate of Northwestern University of Evanston, Ill. where he earned a Bachelor of Arts and Science Degree in economics, a graduate of DePaul University in Chicago, Ill. where he earned a Master’s of Business Administration degree and is graduating May, 2010 from the University of Illinois in Champaign with a Master of Science in Accounting. He will be working for Pricewaterhouse-Coopers, in Chicago, Ill.

A September, 2010 wedding is planned.